Cole-Parmer 93284 Instruction Manual

Universal Input Model 93284

Instruction Manual

• Accepts Current, Voltage, TC, & RTD Inputs

• 4 Digit Display, 0.56" (14 mm) High, Red LEDs

• Linear or Square Root with Low-Flow Cutoff

• Maximum/Minimum Display

• UL Type 4X, NEMA 4X, IP65 Front

• Universal Power Supply 85-265 VAC

• 12-36 VDC/12-24 VAC Power Option

• Two Relays or 4-20 mA Output Option

• 24 VDC Transmitter Power Supply Options

• Serial Communication Adapters

RS-232 & RS-422/485 Options

• Modbus

• Copy Meter Settings to Other Meters

• MeterView® Software - Configuration & Data Acquisition

®

RTU Option

Cole-Parmer Instrument Company

625 E. Bunker Hill Court, Vernon Hills, IL 60061
Tel [phone] • Fax [phone]

www.coleparmer.com

Sunlight

Readable

Display!

R

Model 93284 Universal Input Meter Instruction Manual

Disclaimer

The information contained in this document is subject to change
without notice. Cole-Parmer Instrument Company makes no repre­sentations or warranties with respect to the contents hereof, and
specifically disclaims any implied warranties of merchantability or fit­ness for a particular purpose.

Visit our Web Site

http://www.coleparmer.com

2

Model 93284 Universal Input Meter Instruction Manual

INTRODUCTION

The 93284 is a multipurpose, easy to use digital panel meter. It accepts
current, voltage, thermocouple, and RTD signals. The four front panel
buttons make the setup and programming an easy task.

The isolated 24 VDC transmitter power (optional) can be used to power
the input transmitter, the 4-20 mA output, or other devices.

The two relays (optional) can be used for alarm indication or process con­trol applications, such as pump alternation control.

The 4-20 mA isolated output and the Modbus RTU serial communication
options make the 93284 an excellent addition to any system.

ORDERING INFORMATION

Model Description

93284-00 85-265 VAC, No options
93284-02 85-265 VAC, 24 V transmitter supply
93284-04 85-265 VAC, 2 relays
93284-06 85-265 VAC, 2 relays & 24 V transmitter supply
93284-10 12-36 VDC, No options
93284-12 12-36 VDC, 2 relays
93284-30 85-265 VAC, Modbus
93284-32 85-265 VAC, 24 V transmitter supply, Modbus
93284-34 85-265 VAC, 2 relays, Modbus
93284-36 85-265 VAC, 2 relays & 24 V transmitter supply, Modbus
93284-38 85-265 VAC, 4-20 mA output
93284-40 85-265 VAC, 4-20 mA output, Modbus
93284-42 85-265 VAC, 4-20 mA output & 24 V supply
93284-44 85-265 VAC, 4-20 mA output & 24 V supply, Modbus
93284-46 85-265 VAC, 4-20 mA output & dual 24 V supplies
93284-48 85-265 VAC, 4-20 mA output & dual 24 V supplies, Modbus
93284-50 12-36 VDC, Modbus
93284-52 12-36 VDC, 2 relays, Modbus
93284-54 12-36 VDC, 4-20 mA output
93284-56 12-36 VDC, 4-20 mA output, Modbus

Note: All models may be powered from AC or DC, see Specifications for details.

Accessories

Model Description

93284-20 RS-232 Serial Adapter with 93284-24 Included
93284-22 RS-422/485 Serial Adapter with 93284-24 Included

93284-24 Standard Modular Cable, 7' (2.1 m)
93284-26 MeterView® software for 1 meter
93284-27 MeterView® software for up to 10 meters
93284-28 MeterView® software for up to 100 meters

3

Model 93284 Universal Input Meter Instruction Manual

Table of Contents

INTRODUCTION ------------------------------------------------------------ 3
ORDERING INFORMATION--------------------------------------------- 3
SPECIFICATIONS---------------------------------------------------------- 7

General-------------------------------------------------------------------------------7
Process Input ----------------------------------------------------------------------8
Temperature Inputs -------------------------------------------------------------- 9
Relays Option-------------------------------------------------------------------- 10
Isolated 4-20 mA Transmitter Output ------------------------------------ 11
Serial Communications------------------------------------------------------- 11

COMPLIANCE INFORMATION ----------------------------------------12

Safety ------------------------------------------------------------------------------- 12
Electromagnetic Compatibility--------------------------------------------- 12

SAFETY INFORMATION ------------------------------------------------13
INSTALLATION ------------------------------------------------------------14

Unpacking------------------------------------------------------------------------- 14
Panel Mounting------------------------------------------------------------------ 14
Connections---------------------------------------------------------------------- 15

Connector Labeling ---------------------------------------------------------- 15
Power Connections ---------------------------------------------------------- 15
Signal Connections ---------------------------------------------------------- 16
Serial Communication ------------------------------------------------------- 19
Relays and 24 V Output Connections ----------------------------------- 19
Switching Inductive Loads-------------------------------------------------- 20
4-20 mA Output & Input Signal Connections -------------------------- 21

SETUP AND PROGRAMMING ----------------------------------------22

Front Panel Buttons and Status LED Indicators --------------------- 23
Display Functions and Messages----------------------------------------- 24
Main Menu ------------------------------------------------------------------------ 27
Setting Numeric Values ------------------------------------------------------ 28
Setting Up the Meter (setu) ------------------------------------------------- 29

Setting the Input Signal (inpt) -------------------------------------------- 30
Setting the Decimal Point (dc.pt) ----------------------------------------- 31
Setting the Temperature Scale (F C) ---------------------------------- 31
Setting the Relay Operation (rely) -------------------------------------- 32

4

Model 93284 Universal Input Meter Instruction Manual

Relay and Alarm Operation ------------------------------------------------ 35
Scaling the 4-20 mA Analog Output (Aout) ---------------------------- 41
Program the Sensor Break Output Value (SEbr) --------------------- 42
Analog Output when Display is Out of Range------------------------- 42

Programming the Meter (prog)--------------------------------------------- 43

Scaling the Meter (scal)---------------------------------------------------- 44
Calibrating the Meter (Cal)------------------------------------------------- 46
Recalibrating Temperature Inputs (Cal) -------------------------------- 46
Recalibrating Process Inputs (ICal)------------------------------------- 47

Setting Up the Password (pass) ------------------------------------------- 48

Locking the Meter ------------------------------------------------------------ 48
Unlocking the Meter---------------------------------------------------------- 48

Advanced Features Menu---------------------------------------------------- 50

Advanced Features Menu & Display Messages ---------------------- 51
Offset Adjustment (Adj)----------------------------------------------------- 53
Noise Filter (fltr)------------------------------------------------------------ 53
Noise Filter Bypass (byps) ------------------------------------------------- 54
Serial Communications (serl) -------------------------------------------- 54
Select Menu (SElc) ---------------------------------------------------------- 55
Linear or Square Root Function (linr or Sqrt) ---------------------- 55
Low-Flow Cutoff (cutF) ----------------------------------------------------- 56
Display Intensity (inty) ----------------------------------------------------- 56
Meter Copy Function (Copy) ----------------------------------------------- 57
Internal Calibration (ICal)-------------------------------------------------- 59

OPERATION ----------------------------------------------------------------62

Front Panel Buttons Operation -------------------------------------------- 62
Maximum/Minimum Readings---------------------------------------------- 63

MOUNTING DIMENSIONS----------------------------------------------64
TROUBLESHOOTING----------------------------------------------------65

Diagnostics Menu (diag)----------------------------------------------------- 65

Determining Software Version -------------------------------------------- 65

Reset Meter to Factory Defaults ------------------------------------------- 66

Factory Defaults & User Settings----------------------------------------- 67

Troubleshooting Tips --------------------------------------------------------- 69

QUICK USER INTERFACE REFERENCE GUIDE----------------70

5

Model 93284 Universal Input Meter Instruction Manual

Table of Figures

Figure 1. Panel Cutout and Mounting............................................... 14

Figure 2. Connector Labeling for Two Relays & 24 V Supply.........15

Figure 3. Power Connections ............................................................ 15

Figure 4. Transmitter Powered by Ext. Supply or Self-Powered.... 16

Figure 5. Transmitters Powered by Internal Supply (Optional)...... 16

Figure 6. Voltage Input Connections................................................ 17

Figure 7. Thermocouple Input Connections .................................... 17

Figure 8. Three-Wire RTD Input Connections .................................. 18

Figure 9. Two-Wire RTD Input Connections..................................... 18

Figure 10. Four-Wire RTD Input Connections.................................. 19

Figure 11. Relay & 24 V Output Connections................................... 19

Figure 12. AC and DC Loads Protection...........................................20

Figure 13. Low Voltage DC Loads Protection .................................. 20

Figure 14. 4-20 mA Output & Input Signal Powered by Meter ........21

Figure 15. 4-20 mA Output Powered Externally............................... 21

Figure 16. Meter Copy Connection ................................................... 57

Figure 17. Meter Dimensions – Side View........................................ 64

Figure 18. Case Dimensions - Top View........................................... 64

6

Model 93284 Universal Input Meter Instruction Manual

SPECIFICATIONS

Except where noted all specifications apply to operation at +25°C.

General

DISPLAY 0.56" (14 mm) high, red LED

DISPLAY INTENSITY Eight intensity levels

DISPLAY
UPDATE RATE

OVERRANGE

UNDERRANGE

PROGRAMMING
METHODS

NOISE FILTER Programmable from 2 to 199 (0 will disable filter)

RECALIBRATION All ranges are calibrated at the factory. Recalibration is

MAX/MIN
DISPLAY

PASSWORD Programmable password restricts modification of

NON-VOLATILE
MEMORY

POWER AC: 85-265 VAC, 50/60 Hz, DC: 90-265 VDC

FUSE Required fuse: UL Recognized, 5 A max, slow blow

ISOLATED
TRANSMITTER
POWER SUPPLY

NORMAL MODE
REJECTION

ISOLATION 4 kV input/output-to-power line

OVERVOLTAGE
CATEGORY

Four digits (-1999 to 9999), automatic lead zero blanking.

Process/RTD: 3.7-5/second
Thermocouple: 1.8-2.5/second

Display flashes

Display flashes

Four front panel buttons, PC and MeterView® software, or
cloning using Copy function

recommended at least every 12 months.

Max/min readings reached by the process are stored until
reset by the user or until power to the meter is turned off.

programmed settings.

All programmed settings are stored in non-volatile memory
for a minimum of ten years if power is lost.

Models with transmitter option: 20 VA / 20 Watts
Models without transmitter option: 8 VA / 8 Watts

Optional: 12-36 VDC, 12-24 VAC, 6 Watts / 6 VA

Up to 6 meters may share one 5 A fuse

One or two transmitter power supplies (Optional)
P or P1: 24 VDC ± 10% @ 200 mA max. (-1 option)
P1 & P2: 24 VDC ± 10% @ 200 mA & 40 mA max. (-2 option)

64 dB at 50/60 Hz

500 V input-to-output, output-to-P1/P2, or P1-to-P2 supplies

Installation Overvoltage Category II:
Local level with smaller transient overvoltages than Instal­lation Overvoltage Category III.

9999

-1999

7

Model 93284 Universal Input Meter Instruction Manual

ENVIRONMENTAL Operating temperature range: 0 to +65°C

CONNECTIONS Removable screw terminal blocks accept 12 to 26 AWG

ENCLOSURE 1/8 DIN, high impact plastic,

MOUNTING 1/8 DIN panel cutout required. Two panel mounting

TIGHTENING
TORQUE

OVERALL
DIMENSIONS

WEIGHT 8.0 oz (227 g) (no options)

WARRANTY 3 years parts and labor

Storage temperature range: -40 to +85°C
Relative humidity: 0 to 90% non-condensing

wire, RJ11 for serial communication adapters

UL 94V-0, color: gray

bracket assemblies provided

Screw terminal connectors: 4.5 lb-in (0.5 Nm)

2.45" x 4.68" x 4.19" (62 mm x 119 mm x 106 mm)
(H x W x D)

9.7 oz (275 g) (2 relays & 24 V transmitter supply options)

Process Input

INPUTS Field selectable:

ACCURACY ±0.05% of span ±1 count, square root: 10-100% F.S.

FUNCTION Linear or square root

LOW-FLOW
CUTOFF

TEMPERATURE
DRIFT

DECIMAL POINT Up to three decimal places for process inputs:

±20 mADC (0-20, 4-20 mA) and ±10 VDC (0-5, 1-5, 0-10 V)

0-9999 (0 disables cutoff function)

50 PPM/°C from 0 to 65°C ambient

d.ddd, dd.dd, ddd.d, or dddd

CALIBRATION
RANGE

INPUT
IMPEDANCE

INPUT
OVERLOAD

An Error message will appear if input 1 signal and input 2
signals are too close together.

Input
Range

4-20 mA 0.40 mA

±10 V

Voltage ranges: greater than 1 MΩ
Current ranges: 50 - 100 Ω

Current input protected by resettable fuse.
Fuse resets automatically after fault is removed.

Minimum Span
Input 1 & Input 2

0.20 V

(depending on resettable fuse impedance)

8

Model 93284 Universal Input Meter Instruction Manual

Temperature Inputs

INPUTS Field selectable: type J, K, T, or E thermocouples;

RESOLUTION

ACCURACY

Input Type Range Accuracy

Type J

Type K

Type T

Type T

0.1° Res

Type E

100 Ω RTD

COLD
JUNCTION
REFERENCE

TEMPERATURE
DRIFT

OFFSET
ADJUSTMENT

INPUT
IMPEDANCE

SENSOR BREAK
DETECTION

100 Ω platinum RTD (0.00385 or 0.00392 curve)

1° for all thermocouples and RTD inputs
1° or 0.1° for Type T thermocouple

-58° to 1382° F

-50° to 750°C

-58° to 2300° F

-50° to 1260°C

-292° to 700° F

-180° to 371°C

-199.9° to 700.0° F

-180.0° to 371.0°C

-58° to 1700° F

-50° to 927°C

-328° to 1382°F

-200° to 750°C

Automatic, fixed, no user calibration needed

±2°C maximum
0 to 65°C ambient temperature

Programmable to ±19.9°. This parameter allows the user to
apply an offset value to the temperature being displayed.

Greater than 100 kΩ

Open TC or RTD sensor indicated by display flashing oPEn.
All relays and alarm status LEDs go to alarm state.
Analog output goes to the programmed sensor break value.

±2°F
±1°C

±2°F
±1°C

±2°F
±1°C

±1.8°F
±1.0°C

±2°F
±1°C

±1°F
±1°C

9

Model 93284 Universal Input Meter Instruction Manual

Relays Option

RATING 2 SPDT (Form C); rated 3 A @ 30 VDC or 3 A @ 250 VAC

ELECTRICAL
NOISE
SUPPRESSION

DEADBAND 0-100% of full scale, user selectable

HIGH OR LOW
ALARM

RELAY
OPERATION

RELAY RESET User selectable via front panel buttons or PC

Automatic reset only (non-latching)

TIME DELAY 0 to 199 seconds, on and off delays

FAIL-SAFE
OPERATION

AUTO
INITIALIZATION

resistive load; 1/14 HP @ 125/250 VAC for inductive loads

A suppressor (snubber) should be connected to each relay
contact switching inductive loads to prevent
disruption to the microprocessor’s operation.
Recommended suppressor value: 0.01 µF/470 Ω, 250 VAC

User may program any alarm for high or low trip point.

Automatic (non-latching)
Latching
Pump alternation control

Automatic + manual reset at any time (non-latching)

Manual reset only, at any time (latching)

Manual reset only after alarm condition has cleared (latching)

Automatic reset: Relays will automatically reset when the
input passes the reset point.

Manual reset: Front panel ACK button. Pressing ACK re­sets all manually resettable relays.

Programmable and independent for each relay

Programmable
Independent for each relay

When power is applied to the meter, relays will reflect the
state of the input to the meter.

Fail-safe operation: relay coil is energized in non-alarm condition. In
case of power failure, relay will go to alarm state.

10

Model 93284 Universal Input Meter Instruction Manual

Isolated 4-20 mA Transmitter Output

OUTPUT RANGE 1.00 to 23.00 mA typical

CALIBRATION Factory calibrated for 4-20 mA

SCALING RANGE 0.00 to 23.99 mA for any display range,

ACCURACY ± 0.1% F.S. ± 0.004 mA

TEMPERATURE
DRIFT

ISOLATED
TRANSMITTER
POWER SUPPLY

EXTERNAL LOOP
POWER SUPPLY

OUTPUT LOOP
RESISTANCE

24 VDC

35 VDC (external)

see output range above

50 PPM/°C from 0 to 65°C ambient

Note: Analog output drift is separate from input drift.

One or two transmitter power supplies (Optional)
P1: 24 VDC ± 10% @ 200 mA max. (-1 option)
P1 & P2: 24 VDC ± 10% @ 200 mA & 40 mA max. (-2 option)

35 VDC maximum

Power supply Minimum Maximum

10 Ω 700 Ω

100 Ω 1200 Ω

Serial Communications

METER
ADDRESS

BAUD RATE 300 – 19,200 bps

TRANSMIT
TIME DELAY

DATA 8 bit (1 start bit, 1 stop bit)

PARITY None, even, or odd

BYTE-TO-BYTE
TIMEOUT

TURN AROUND
DELAY

Refer to PDC and Modbus Serial Communication Protocol manuals for details.

PDC protocol: 0 - 99
Modbus protocol: 1 - 247

Programmable between 0 and 199 ms
or transmitter always on for RS-422 communication

(Modbus only; PDC protocol does not use parity)

0.01 – 2.54 sec (Modbus only)

Less than 2 ms (fixed)

11

Model 93284 Universal Input Meter Instruction Manual

COMPLIANCE INFORMATION

Safety

UL LISTED USA and Canada

UL FILE NUMBER E195350

FRONT PANEL UL Type 4X, NEMA 4X, IP65; panel gasket provided

LOW VOLTAGE
DIRECTIVE

Electromagnetic Compatibility

EMISSIONS

Radiated
Emissions

AC Mains
Conducted
Emissions

IMMUNITY

RFI - Amplitude
Modulated

Electrical Fast
Transients

Electrostatic
Discharge

RFI - Conducted

AC Surge

Surge

Power-Frequency
Magnetic Field

Voltage Dips

Voltage
Interruptions

UL 508 Industrial Control Equipment

EN 61010-1:2001 (UL 61010C-1)
Safety requirements for measurement, control, and
laboratory use

EN 55011:1998
Group 1 Class A ISM emissions requirements

Class A

Class A

EN 61000-6-2:2001
EMC heavy industrial generic immunity standard

80 -1000 MHz 10 V/m 80% AM (1 kHz)

±2kV AC mains, ±1kV other

±4kV contact, ±8kV air

10V, 0.15-80 MHz, 1kHz 80% AM

±2kV Common, ±1kV Differential

1KV (CM)

3 A/m 70%V for 0.5 period

40%V for 5 & 50 periods

<5%V for 250 periods

12

Model 93284 Universal Input Meter Instruction Manual

Note:

Testing was conducted on 93284 Meters installed through the cov­ers of grounded metal enclosures with cable shields grounded at the
point of entry representing installations designed to optimize EMC
performance.

Declaration of Conformity available.

SAFETY INFORMATION

!

CAUTION: Read complete

instructions prior to instal­lation and operation of the
meter.

WARNING
Hazardous voltages exist within enclosure. Installation and service
should be performed only by trained service personnel.

13

WARNING: Risk of
electric shock.

Model 93284 Universal Input Meter Instruction Manual

INSTALLATION

There is no need to remove the meter from its case to com­plete the installation, wiring, and setup of the meter.

Unpacking

Remove the meter from box. Inspect the packaging and con­tents for damage. Report damages, if any, to the carrier.

If any part is missing or the meter malfunctions, please contact
your supplier or the factory for assistance.

Panel Mounting

• Prepare a standard 1/8 DIN panel cutout – 3.622" x 1.772" (92 mm

x 45 mm). Refer to Mounting Dimensions, page 64 for more details.

• Clearance: allow at least 4" (102 mm) behind the panel for wiring.

• Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).

Recommended minimum panel thickness to maintain Type 4X
rating: 0.06" (1.5 mm) steel panel, 0.16" (4.1 mm) plastic panel.

• Remove the two mounting brackets provided with the meter (back-off

the two screws so that there is ¼" (6.4 mm) or less through the
bracket. Slide the bracket toward the front of the case and remove).

• Insert meter into the panel cutout.

• Install mounting brackets and tighten the screws against the panel.

To achieve a proper seal, tighten the mounting bracket screws
evenly until meter is snug to the panel along its short side. DO NOT
OVER TIGHTEN, as the rear of the panel may be damaged.

1.772"

B

(45mm)

A

3.622" (92mm)

Square Corners to 0.060"

(1.5mm) Max Radius

Panel Cutout
to DIN 43700

Gasket

Panel

Removable
Connectors

Tolerances:
A: +0.032 (+0.8mm)

-0.000 (-0.0mm)
B: +0.024 (+0.6mm)

-0.000 (-0.0mm)

Figure 1. Panel Cutout and Mounting

14

Mounting

Bracket

Mounting

Screw

Model 93284 Universal Input Meter Instruction Manual

A

Connections

All connections are made to removable screw terminal connectors
located at the rear of the meter.

Use copper wire with 60°C or 60/75°C insulation for all
line voltage connections. Observe all safety regulations.

!

Electrical wiring should be performed in accordance with
all applicable national, state, and local codes to prevent
damage to the meter and ensure personnel safety.

Connector Labeling

The connectors label, affixed to the meter, shows the location of all con­nectors available with requested configuration. It also identifies the loca­tion of the RTD/TC selector switch.

RELA Y2 RELA Y1

4365 21

COM NONO NC NC COM

RTD

TC

EXC T+V+ mA+ COM

3412 5

RTD

SWI TC H

24V OUT

P+ P-

123 456

TC

PO WER

2121

+

EL1601

-

Figure 2. Connector Labeling for Two Relays & 24 V Supply

Power Connections

Power connections are made to a two-terminal connector labeled
POWER on Figure 2. The meter will operate regardless of DC polarity
connection. The + and - symbols are only a suggested wiring convention.

POWER CONNECTOR

Figure 3. Power Connections

12

+ -

Required External Fuse:

5 A max, Slow Blow

15

C or DC

POWER

Model 93284 Universal Input Meter Instruction Manual

Signal Connections

Signal connections are made to a five-terminal connector labeled
SIGNAL on Figure 2. The COM (common) terminal is the return for all
types of input signals.

Current and Voltage Connections

The following figures show examples for current and voltage connections.
There are no switches or jumpers to set up for current and voltage inputs.

Setup and programming is performed through the front panel buttons.

SIGNAL CONNECTOR

V+ T+

EXC

21 354

COMmA+

SIGNAL CONNECTOR

mA+

V+ T+

EXC

21 354

COM

-+ +-

2-Wire

4-20 mA

Transmitter

External

Power

Supply

2-Wire 4-20 mA

Self-Powered

Transmitter

-+

Figure 4. Transmitter Powered by Ext. Supply or Self-Powered

SIGNAL CONNECTOR

mA+

V+ T+

EXC

21 354

-+

2-Wire

4-20 mA

Transmitter

COM

24V OUT

P+ P-

21

SIGNAL CONNECTOR

mA+

V+ T+

Signal

EXC

21 354

+

-

3-Wire

4-20 mA

Transmitter

COM

24V OUT

P+ P-

21

Figure 5. Transmitters Powered by Internal Supply (Optional)

The current input is protected against current overload by a resettable
fuse. The display may or may not show a fault condition depending on
the nature of the overload.

The fuse limits the current to a safe level when it detects a fault condi­tion, and automatically resets itself when the fault condition is removed.

16

Model 93284 Universal Input Meter Instruction Manual

SIGNAL CONNECTOR

V+ T+

EXC

21 354

SIGNAL CONNECTOR

mA+

COMmA+

V+ T+

EXC

21 354

COM

24V OUT

P+ P-

21

+-

Voltage

Signal

Signal

+

-

3-Wire

Voltage

Transducer

Figure 6. Voltage Input Connections

The meter is capable of accepting any voltage from -10 VDC to +10 VDC.

Thermocouple and RTD Connections

The following figures show examples for thermocouple and RTD con­nections.

The RTD/TC selector switch must be set to the proper position for the
meter to accept the selected temperature input.

The input type is selected using the Setup menu.
Selected thermocouple input must correspond to thermocouple sensor

and wire type used.

SIGNAL CONNECTOR

V+ T+

EXC

21 354

COMmA+

+

-

123 456

RTD TC

Switch

Position

TC

Figure 7. Thermocouple Input Connections

17

Model 93284 Universal Input Meter Instruction Manual

SIGNAL

CONNECTOR

V+ T+

EXC

21 354

COMmA+

123 456

RTD TC

RTD

Sensor

Switch

Position

Figure 8. Three-Wire RTD Input Connections

The meter accepts two, three, or four-wire RTDs. The three-wire RTD
connection has built-in lead wire compensation.

SIGNAL

CONNECTOR

V+ T+

EXC

21 354

Figure 9. Two-Wire RTD Input Connections

Lead wire compensation for two-wire RTDs can be applied using the
Adjust menu. See Offset Adjustment (Adj), page 53.

RTD

Sensor

COMmA+

123 456

RTD TC

Switch

Position

18

Model 93284 Universal Input Meter Instruction Manual

T

SIGNAL CONNECTOR

V+ T+

EXC

21 354

COMmA+

123 456

RTD TC

RTD

Sensor

NC

Switch

Position

Figure 10. Four-Wire RTD Input Connections

The four-wire RTD connection is similar to the three-wire. One of the
leads of a four-wire RTD is not connected, and may be clipped off.

The three-wire connection provides sufficient lead wire compensation to
provide accurate readings even with long leads.

Serial Communication

Serial communication connection is made to an RJ11 connector labeled
SERIAL on Figure 2. Use 93284-20 for RS-232 interfacing.

Use 93284-22 for RS-422/485 interfacing.
Use 3-93284-24 for meter-to-meter interfacing for cloning purposes (i.e.

copying programmed settings from one meter to other meters).

Relays and 24 V Output Connections

Relay connections are made to a six-terminal connector labeled
RELAY1, RELAY2 on Figure 2. The COM (common) terminals of the
relays should not be confused with the COM (common) terminal of the
SIGNAL connector. The 24 VDC output is available at the connector
labeled 24V OUT, next to the relays connector.

RELAY2 RELAY1

4365 21 21

24V OU

COM NONO NC NC COM

P+ P-

Figure 11. Relay & 24 V Output Connections

19

Model 93284 Universal Input Meter Instruction Manual

Switching Inductive Loads

The use of suppressors (snubbers) is strongly recommended when switching
inductive loads to prevent disrupting the microprocessor’s operation. The sup­pressors also prolong the life of the relay contacts. Suppression can be obtained
with resistor-capacitor (RC) networks assembled by the user or purchased as
complete assemblies. Refer to the following circuits for RC network assembly
and installation:

C

C

R

R

Figure 12. AC and DC Loads Protection

Choose R and C as follows:

R: 0.5 to 1 Ω for each volt across the contacts
C: 0.5 to 1 µF for each amp through closed contacts

Notes:

1. Use capacitors rated for 250 VAC.

2. RC networks may affect load release time of solenoid loads. Check to con-

firm proper operation.

3. Install the RC network at the meter's relay screw terminals. An RC network

may also be installed across the load. Experiment for best results.

Use a diode with a reverse
breakdown voltage two to
three times the circuit volt­age and forward current at
least as large as the load
current.

Figure 13. Low Voltage DC Loads Protection

20

Model 93284 Universal Input Meter Instruction Manual

4-20 mA Output & Input Signal Connections

Connections for the 4-20 mA transmitter output are made to the connec­tor terminals labeled “mA OUT, I-, I+”. The 4-20 mA output may be
powered from an internal power supply (optional) or from an external
power supply.

SIGNAL CONNECTOR

mA+

V+ T+

EXC

21 354

COM

mA OUT

I-

6

I+

24V OUT

P1-

45 312

P2+

P2-P1+

-

2-Wire

4-20 mA

Transmitter

+

Remote Display,

Chart Recorder,

etc.

-

+

Figure 14. 4-20 mA Output & Input Signal Powered by Meter

mA OUT

I-

I+

56

External

Power
Supply

-

+

+

Remote Display,

Chart Recorder,

etc.

Figure 15. 4-20 mA Output Powered Externally

-

21

Model 93284 Universal Input Meter Instruction Manual

SETUP AND PROGRAMMING

• There is no need to recalibrate the meter

when first received from the factory.

• The meter is factory calibrated prior to
shipment, for all input types, in milliamps,
volts, and degrees respectively. The calibra­tion equipment is certified to NIST standards.

Overview

There are no jumpers involved in the setup process of the meter. The
RTD/TC selector switch, located between the SIGNAL and SERIAL
connectors, must be set accordingly for the meter to accept RTD or
thermocouple inputs, Figure 2.

Setup and programming is done through the front panel buttons.
After power and signal connections have been completed and verified,

apply power to the meter.

For

Quick User Interface Reference Guide

go to page 70.

22

Model 93284 Universal Input Meter Instruction Manual

A

Front Panel Buttons and Status LED Indicators

9765

21

SR

CKMAXRESETMENU

Button
Symbol

• Press the Menu button to enter or exit the Programming Mode at

any time.

• Press the Right arrow button to move to the next digit during digit

programming.

• Press the Up arrow button to scroll through the menus, decimal

point, or to increment the value of a digit.

• Press the Enter/Ack button to access a menu or to accept a setting.

• Press and hold the Right arrow and the Menu buttons, for three

seconds, to access the Advanced features of the meter (Press and
hold Right arrow first then Menu).

Description LED Status

Menu

Right arrow/Reset

Up arrow/Max

Enter/Ack

1 Alarm 1

2 Alarm 2

S Set point indicator

R Reset point indicator

23

Model 93284 Universal Input Meter Instruction Manual

Display Functions and Messages

The meter displays various functions and messages during
setup/programming and operation. The following table shows the dis­played functions and messages with their action/setting description.

Display Parameter Action/Setting

setu

inpt

4-20

0-10

rtd

a385

A392

tC

0 J

1 k

2 T

3
t.0

4 E

f C

°F

°C

dec.p

RELY

RLY1

Act1

Auto

A­m

LtCH

Setup

Input

4-20 mA

0-10 VDC

RTD

Alpha 385

Alpha 392

TC

0 J

1 K

2 T

3 T.0

4 E

°

F or °C

°

F

°

C

Decimal point

Relay

Relay1

Action1

Automatic

Auto-manual

Latching

Enter Setup menu

Enter Input menu

Set meter for 4-20 mA input

Set meter for ±10 VDC input

Set meter for RTD input

Set α = 0.00385 European curve 100Ω
RTD

Set α = 0.00392 American curve 100Ω RTD

Set meter for TC input

Type J

Type K

Type T

Type T, 0.1° resolution

Type E

Set temperature scale

Set meter to Fahrenheit

Set meter to Celsius

Set decimal point for process inputs

Enter the Relay menu

Relay 1 setup

Set relay 1 action (automatic, latching, etc.)

Set relay for automatic reset

Set relay for automatic + manual reset any
time

Set relay for latching operation

24

Model 93284 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

L-CL

Altr

oFF

Set1

rSt1

RLY2

Act2

Set2

RSt2

FLSF

FLS1

on

FLS2

DLAY

DLY1

On1

OFF1

DLY2

On2

OFF2

Aout

SEbr

out1

out2

prog

scal

Cal

Latching-cleared

Alternate

Off

Set1

Reset1

Relay2

Action2

Set2

Reset2

Fail-safe

Fail-safe1

On

Fail-safe2

Delay

Delay1

On1

Off1

Delay2

On2

Off2

Analog output

Sensor break

Output 1

Output 2

Program

Scale

Calibrate

Set relay for latching operation with manual
reset only after alarm condition has cleared

Set relays for pump alternation control

Disable relay and front panel status LEDs
Disable relay’s fail-safe operation

Program set point 1

Program reset point 1

Setup relay 2

Set relay 2 action (automatic, latching, etc.)

Program set point 2

Program reset point 2

Enter Fail-safe menu

Set relay 1 fail-safe operation

Enable fail-safe operation

Set relay 2 fail-safe operation

Enter Time Delay menu

Enter relay 1 time delay setup

Set relay 1 On time delay

Set relay 1 Off time delay

Enter relay 2 time delay setup

Set relay 2 On time delay

Set relay 2 Off time delay

Enter the Analog output menu

Program TC or RTD sensor break value for
analog out

Program output 1 value (e.g. 4 mA)

Program output 2 value (e.g. 20 mA)

Enter the Program menu

Enter the Scale menu

Enter the Calibrate menu

25

Model 93284 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

inp1

dis1

inp2

dis2

err

pass

unlC

loCd

9999

-1999
open

Input 1

Display 1

Input 2

Display 2

Error

Password

Unlocked

Locked

Flashing display

Calibrate input 1 signal or program input 1
value

Program display 1 value

Calibrate input 2 signal or program input 2
value

Program display 2 value

Error, calibration not successful, check signal

Enter the Password menu

Program password to lock meter

Enter password to unlock meter

Overrange condition
Underrange condition
Open TC or RTD sensor

26

Model 93284 Universal Input Meter Instruction Manual

Main Menu

The main menu consists of the most commonly used functions: Setup,
Program, and Password.

• Press Menu button to enter Programming Mode then press Up

arrow button to scroll main menu.

Run

Mode

9846 setu prog pass

• Press Menu, at any time, to exit and return to Run Mode. Changes
made to settings prior to pressing Enter/Ack are not saved.

• Changes to the settings are saved to memory only after pressing
Enter/Ack.

• The display moves to the next menu every time a setting is ac­cepted by pressing Enter/Ack.

27

Model 93284 Universal Input Meter Instruction Manual

Setting Numeric Values

The numeric values are set using the Right and Up arrow buttons.
Press Right arrow to select next digit and Up arrow to increment digit
value.

The digit being changed is displayed brighter than the rest.
Press the Enter/Ack button, at any time, to accept a setting or Menu

button to exit without saving changes.

Increment Digit

Value

04.00 04.00 05.00

Select Next Digit Accept Setting

The decimal point is set using the Up arrow button in the Setup-decimal
point menu.

Next

Setting

28

Model 93284 Universal Input Meter Instruction Manual

Setting Up the Meter (setu)

The Setup menu is used to select:

1. Input signal the meter will accept

2. Decimal point position for process inputs

3. Units (°F or °C) for temperature inputs

4. Relay operation

5. 4-20 mA analog output set up

Press the Enter/Ack button to access any menu or press Up arrow but­ton to scroll through choices. Press the Menu button to exit at any time.

setu inpt

dec.p

F C

29

***

rely

Relay menu is always available even if relays

*

option is not installed. Visual alarm indication is
available through front panel LEDs and Mete rView
software.

Analog Output menu is available if selected in the

**

Advanced Features menu. 4-20 mA output option
board is installed and set up at the factory.

Aout

Model 93284 Universal Input Meter Instruction Manual

Setting the Input Signal (inpt)

Enter the Input menu to set up the meter to display current (4-20), volt­age (0-10), thermocouple (tC), or RTD (rtd) inputs.

The voltage input is capable of accepting any signal from -10 to +10
VDC. Select voltage input to accept 0-5, 1-5, 0-10, or ±10 VDC signals.

The current input is capable of accepting any signal from -20 to 20 mA.
Select current input to accept 0-20 or 4-20 mA signals.

inpt

4-20 0-10 rtd tC

0 j

1 k

2 t

3 t.0

4 e

J

K

T

T.0

E

Press Enter/Ack to

Make Selections

Press Up Arrow

to Scroll Through

Choices

Press Menu to

Exit at any Time

a385

a392

If RTD is selected, the display shows A385 or A392. Select the coeffi­cient to match the RTD sensor, either 0.00385 (European curve) or

0.00392 (American curve).

If TC is selected, scroll through the thermocouple types and select the
type matching the TC sensor.

The input signal must be connected to the appropriate input terminals
and the RTD/TC selector switch must be set accordingly, see Figure 7
on page 17.

For thermocouple inputs, allow at
least 30 minutes warm-up time for

meter to reach specified accuracy.

30

Model 93284 Universal Input Meter Instruction Manual

Setting the Decimal Point (dc.pt)

Decimal point for temperature inputs is fixed.
Decimal point for process inputs may be set with up to three decimal

places or with no decimal point at all.
Pressing the Up arrow moves the decimal point one place to the right

until no decimal point is displayed, then it moves to the leftmost position.

Select Decimal

Point

Previous

Setting the Temperature Scale (F C)

The meter can be set to display temperature in degrees Fahrenheit or
Celsius.

Press Up arrow to change selection.
Press Enter/Ack to accept.

Previous

dec.p

f C

31

dddd

o

f

o

C

Next

Next

Model 93284 Universal Input Meter Instruction Manual

Setting the Relay Operation (rely)

This menu allows you to set up the operation of the relays:

1. Relay action

a. Automatic reset only (non-latching)
b. Automatic + manual reset at any time (non-latching)
c. Latching (manual reset only)
d. Latching with Clear (manual reset only after alarm condi-

tion has cleared)
e. Pump alternation control (automatic reset only)
f. Off (relay and status LED disabled)

2. Set point

3. Reset point

4. Fail-safe operation
a. On (enabled)
b. Off (disabled)

5. Time delay
a. On delay (0-199 seconds)
b. Off delay (0-199 seconds)

From Setup

Menu

Refer to page 24 for a
description of Display

Functions and Messages

rELY

rLY1 rLY2

Same

Functions as

Act1

Relay 1

SEt1

rSt1

Press
Press

Enter/Ack

button to access any menu

Menu

button to exit at any time

32

FLSF

FLS1

FLS2

dLAY

dLy1

dLY2

Model 93284 Universal Input Meter Instruction Manual

Setting the Relay Action

The relays’ Action menu allows the user to set up the operation of the
relays. The relays may be set up for any of the following modes of op­eration:

1. Automatic reset (non-latching)

2. Automatic + manual reset at any time (non-latching)

3. Latching (manual reset only, at any time)

4. Latching with Clear (manual reset only after alarm condition
has cleared)

5. Pump alternation control (automatic reset only)

6. Off (relay and status LED disabled)

The following graphic shows relay 1 action setup; relay 2 is set up in a
similar fashion.

From Relay 1

Menu

Press
Press

Enter/Ack

button to accept setting

Menu

button to exit at any time

Act1

Auto A-m

LtCH

L-CL

ALtroFF

Programming Set and Reset Points

High alarm indication: program set point above reset point.
Low alarm indication: program set point below reset point.
The deadband is determined by the difference between set and reset

points. Minimum deadband is one display count. If set and reset points
are programmed the same, relay will reset one count below set point.

SEt1

Program Set

Point

Quick Set Points

Press Up arrow and Menu
at the same time to access

rSt1

Program Reset

Point

set/reset points quickly.

33

Model 93284 Universal Input Meter Instruction Manual

Setting Fail-Safe Operation

The fail-safe operation is set independently for each relay. Select on to
enable or select off to disable fail-safe operation.

Press

FLSF

Press

Enter/Ack
Menu

button to accept setting

button to exit at any time

FLS1

FLS2

Programming Time Delay

The On and Off time delays may be programmed for each relay be­tween 0 and 199 seconds. The relays will transfer only after the condi­tion has been maintained for the corresponding time delay.

The On time delay is associated with the set point.
The Off time delay is associated with the reset point.

on oFF

on oFF

dLAY

dLy1

dLY2

On1 OFF1

Program On

Time Delay

Program Off

Time Delay

34

Model 93284 Universal Input Meter Instruction Manual

A

Relay and Alarm Operation

The following graphs illustrate the operation of the relays, status LEDs,
and ACK button.

High Alarm Operation (Set > Reset)

Input

Set

Reset

Relay

LED

de-energized

off

energized

on

Automatic (non-latching)

Relay

LED

ACK

pressed

utomatic or Manual (non-latching)

Relay

LED

ACK

pressed

Manual (latching)

Relay

LED

ACK

pressed

Manual only after passing below Reset (latching with clear)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay.
For relay to turn back "on", signal must go below set point, and then go
above it.

35

Model 93284 Universal Input Meter Instruction Manual

Low Alarm Operation (Set < Reset)

Input

Reset

Set

Relay

LED

energized

on

de-energized

off

Automatic (non-latching)

Relay

LED

ACK

pressed

Automatic or Manual (non-latching)

Relay

LED

ACK

pressed

Manual (latching)

Relay

LED

ACK

pressed

Manual only after passing above Reset (latching with clear)

For Manual reset mode, ACK can be pressed anytime to turn "off" relay.
For relay to turn back "on", signal must go above set point, and then go
below it.

36

Model 93284 Universal Input Meter Instruction Manual

Time Delay Operation

The following graphs show the operation of the time delay function.

Input

Set

Reset

<Tdelay <Tdelay >=Tdelay

Relay

LED

*

On Time Delay

Input

Set

Reset

<Tdelay <Tdelay >=Tdelay

Relay

LED

*

Off Time Delay

If the signal crosses the set point, the On time delay timer starts and the
relay trips when the time delay has elapsed. If the signal drops below
the set point (high alarm) before the time delay has elapsed, the On
time delay timer resets and the relay does not change state. The same
principle applies to the Off time delay.

* Note: The LED is not affected by Time Delay when “Automatic or Man-

ual” reset mode is selected. Rather the LED follows the set and
reset points.

37

Model 93284 Universal Input Meter Instruction Manual

High Alarm with Fail-Safe Operation (Set > Reset)

Input

Set

Reset

Relay

LED

energized

off

de-energized

on

Automatic (non-latching)

Relay

LED

ACK

pressed

Automatic or Manual (non-latching)

Relay

LED

ACK

pressed

Manual (latching)

Relay

LED

ACK

pressed

Manual only after passing below Reset (latching with clear)

Fail-safe operation: relay coil is energized in non-alarm condition. In

case of power failure, relay will go to alarm state.

38

Model 93284 Universal Input Meter Instruction Manual

Low Alarm with Fail-Safe Operation (Set < Reset)

Input

Reset

Set

Relay

LED

de-energized

on

energized

off

Automatic (non-latching)

Relay

LED

ACK

pressed

Automatic or Manual (non-latching)

Relay

LED

ACK

pressed

Manual (latching)

Relay

LED

ACK

pressed

Manual only after passing above Reset (latching with clear)

Fail-safe operation: relay coil is energized in non-alarm condition. In

case of power failure, relay will go to alarm state.

39

Model 93284 Universal Input Meter Instruction Manual

LEDs indicate the relay status

Pump Alternation Control Operation

Input

Relay1 Set

Relay2 Set

Relay1 &

Relay2 Reset

Input

de-energized energized

Pump 1

Pump 2

Relay1 Set

Relay2 Set

de-energized energized

Relay2 Reset

Relay1 Reset

Pump 1

Input

de-energized energized

Pump 2

Relay1 Set

Relay2 Set

Relay1 Reset

Relay2 Reset

Pump 2

Pump 1

40

Model 93284 Universal Input Meter Instruction Manual

Scaling the 4-20 mA Analog Output (Aout)

The 4-20 mA analog output can be scaled to provide a 4-20 mA signal
for any display range selected.

No equipment is needed to scale the analog output; simply program the
display values to the corresponding mA output signal.

The Analog Output menu is used to program:

1. 4-20 mA output based on display values

2. Sensor break value in mA

Aout

Press Enter to Accept Setting

scal

Press Up to Set Digit Value

Press Right to Select Next Digit

dis1

Press Menu to Exit at any Time

00.00

Set Display 1

Value

out1 04.00

Set Output 1

Value

For instructions on how to program

numeric values see Setting Nu-

meric Values, page 28.

41

dis2

Scale

Output 2

Model 93284 Universal Input Meter Instruction Manual

Program the Sensor Break Output Value (SEbr)

The sensor break value corresponds to the output signal generated
when the meter detects a sensor break for thermocouple and RTD in­puts.

For example if there is an open thermocouple, the meter displays the
message “open” and the analog output goes to the programmed sensor
break value (e.g. 3.00 mA).

The sensor break value can be programmed from 0.00 to 23.99.
The typical output signal range is 1.00 to 23.00 mA (e.g. If sensor break
value is programmed to 0.00, the actual output will not be greater than

1.00 mA).

Press Enter to Accept Setting

Aout

scal

sEbr

Analog Output when Display is Out of Range

The analog output reflects the display out of range conditions as follows:

Input Condition Display Analog Output

Underrange Flashing -1999 3.00 mA
Overrange Flashing 9999 21.00 mA
Open TC or RTD Flashing open Sensor break value

Press Up to Set Digit Value

Press Right to Select Next Digit

Press Menu to Exit at any Time

03.00

Set Sensor

Break Value

42

Program

Menu

Model 93284 Universal Input Meter Instruction Manual

Programming the Meter (prog)

It is very important to read the following information, before proceeding
to program the meter:

• There is no need to recalibrate the meter when first received from

the factory.

• The meter is factory calibrated prior to shipment, for all input
types, in milliamps, volts, and degrees respectively. The calibration
equipment is certified to NIST standards.

• Use the Scale menu to scale process inputs (e.g. 4-20 mA). A cali-
brated signal source is not needed to scale the meter.

• For thermocouple and RTDs, just connect the sensor to the proper
terminals and turn the power on. No calibration needed! (when
the meter is first received from the factory).

The Program menu contains the Calibrate and the Scale menus.
Process inputs may be calibrated or scaled to any display within the

range of the meter.

prog ScAl

Additional parameters, not needed for most applications, are pro­grammed with the Advanced features menu, see Advanced Features
Menu, page 50.

43

CAL

Model 93284 Universal Input Meter Instruction Manual

Scaling the Meter (scal)

The process inputs (4-20 mA and ±10 VDC) can be scaled to display
the process in engineering units.

A signal source is not needed to scale the meter; simply program the
inputs and corresponding display values.

Press Enter to Accept Setting

Aout

scal

sEbr

Note:

Press Up to Set Digit Value

Press Right to Select Next Digit

Press Menu to Exit at any Time

Program

03.00

Set Sensor

Break Value

For instructions on how to program nu-

meric values see Setting Numeric Values,

page 28.

The Scale menu is not available for temperature inputs.

Menu

44

Model 93284 Universal Input Meter Instruction Manual

Error Message (Err)

An error message indicates that the calibration or scaling process was
not successful.

After the error message is displayed, the meter reverts to input 1, allow­ing the appropriate input signals to be applied.

The error message might be caused by any of the following conditions:

1. Input signal is not connected to the proper terminals or it is con­nected backwards.

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

4. Input 1 signal inadvertently applied to calibrate input 2.

Minimum Input Span

The minimum input span is the minimum difference between input 1 and
input 2 signals required to complete the calibration or scaling of the meter.

Input range Input 1 & input 2 span
4-20 mA 0.40 mA

±10 VDC
TC

RTD

0.20 VDC

100°F (56°C)

50°F (28°C)

45

Model 93284 Universal Input Meter Instruction Manual

Calibrating the Meter (Cal)

To scale the meter without a signal

source refer to Scaling the Meter (scal),

page 44.

The meter can be calibrated to display the process in engineering units
by applying the appropriate input signal and following the calibration
procedure.

The use of a calibrated signal source is strongly recommended to cali­brate the meter.

See Scaling the Meter for Button

Functions Description

Cal

inp1 dis1 04.00

Display

Flashes

Accepting

Input

Set Display 1

Value

inp2

Calibrate

Input 2

Recalibrating Temperature Inputs (Cal)

Remember, the meter is calibrated at the factory prior to shipment.
Recalibration is recommended at least every twelve months.

The Calibration (CAL) menu is used to recalibrate the thermocouple and
RTD inputs.

Allow at least 30 minutes warm-up time

before performing recalibration proce-

dure to ensure specified accuracy.

46

Model 93284 Universal Input Meter Instruction Manual

Recommended Calibration Points

To recalibrate the meter, it is recommended to use the Fahrenheit scale;
this will give a greater degree of accuracy to the calibration. The scale
can be changed to the Celsius scale after calibration is completed. The
meter will display temperature accurately in any scale. The following
table shows the recommended low and high calibration points for all
types.

Type of
input

Type J T/C

Type K T/C

Type T T/C

Type T T/C

Type E T/C

100 Ω RTD
(0.00385)

100 Ω RTD
(0.00392)

Input 1
(Low)

32°F 1182°F 600°F

32°F 1893°F 960°F

32°F 693°F 360°F

32.0°F 693.0°F 360.0°F

32°F 1652°F 840°F

32°F

100Ω

32°F

100Ω

Input 2
(High)

1148°F

320.12Ω

1127°F

320.89Ω

Check
(Middle)

590°F

215.61Ω

580°F

215.87Ω

Recalibration Procedure for Temperature Inputs

1. Connect signal to the meter using the appropriate wire (e.g. type J

thermocouple wire to recalibrate type J input), see page 17.

2. Set up the meter to accept the selected input (e.g. type J T/C), see

page 30.

3. Set up the meter to display temperature in degrees Fahrenheit, see

page 31.

4. Apply signal corresponding to input 1 (32°F) and program display 1 to

32, see page 46.

5. Apply signal corresponding to input 2 (1182°F for type J) and program

display 2 accordingly, see page 46.

6. After the meter accepts input 2, the display flashes the message CJr

that indicates the meter is sensing the cold junction reference. This
completes the recalibration procedure for the selected input.

Recalibrating Process Inputs (ICal)

The Internal Calibration (ICAL) menu, located in the Advanced features
menu, is used to recalibrate the current and voltage inputs. Recalibra­tion is recommended at least every twelve months.

Refer to Internal Calibration (ICal), page 59 for instructions.

47

Model 93284 Universal Input Meter Instruction Manual

Setting Up the Password (pass)

The Password menu is used to program a four-digit password to pre­vent unauthorized changes to the programmed parameter settings.

Locking the Meter

Enter the Password menu and program a four-digit password.

For instructions on how to program numeric values see Setting Numeric
Values, page 28.

Run Mode

pass unlC 0000

Program

Password

Record the password for future reference. If appropriate, it may be re­corded in the space provided.

Model:
Serial Number:
Password: __ __ __ __

loCd

Unlocking the Meter

If the meter is password protected, the correct password must be en­tered in order to make changes to the parameter settings.

Run Mode

pass loCd 0000

Enter

Password

48

unlC

Model 93284 Universal Input Meter Instruction Manual

Entering the correct four-digit number sets the password to 0000, dis­abling the protection.

Changes to the programmed parameter settings are allowed only with
the password set to 0000.

If the password entered is incorrect, the meter displays LoCd (Locked)
for about two seconds, then it returns to Run Mode. To try again, press

Enter/Ack while the Locked message is displayed.

Forgot the Password?

The password may be disabled by the following
procedure:

1. Note display reading prior to pressing the Menu
button. Ignore decimal point and sign.

2. Access the Password menu, add 2 to the noted
reading and enter that number as the password
(e.g. display reading = -1.23, password = 0125).

49

Model 93284 Universal Input Meter Instruction Manual

Advanced Features Menu

To simplify the setup process, functions not needed for most applica­tions are located in the Advanced features menu.

Press and hold the Right arrow and the Menu buttons, for three sec­onds, to access the Advanced features of the meter (Press and hold
Right arrow first then Menu).

Press for Three Seconds

*

adj

fltr

byps

Press

Enter/Ack

Menu or to Accept Setting
Press Up to Scroll Menu and

to Increment Digit Value

Press

Right

Menu

Press

to Access

to Select Next Digit

to Exit at any Time

serl

* Available for temperature inputs only

* * Available for process inputs only

Copy

SELc

50

**

I Cal

diag

Model 93284 Universal Input Meter Instruction Manual

Advanced Features Menu & Display Messages

Display Parameter Action/Setting

adj

fltr

byps

serl

prot

PDC

mbs

addr

baud

trdE

prty

tbyt

Copy

send

done

Selc

Func

Linr

Sqrt

cutF

out

Inty

Aout

rEly

ICal

Adjust

Filter

Bypass

Serial

Protocol

PDC

Modbus

Address

Baud rate

Transmit delay

Parity

Byte-to-byte

Copy

Send

Done

Select

Function

Linear

Square root

Cutoff

Output

Intensity

Analog output

Relay

Initial calibration

Set offset adjustment for temperature, not
available for process inputs

Set noise filter value

Set filter bypass value

Set serial communication parameters

Enter the Protocol menu

Select PDC protocol

Select Modbus protocol

Set meter address

Select baud rate

Set transmit delay for serial communication

Select none, even, or odd (Modbus only)

Program byte-to-byte timeout
(silent time – Modbus only)

Enter copy function

Send meter settings to another meter

Copy function completed

Enter the Select menu (function, cutoff, out)

Select linear or square root function

Set meter for linear function

Set meter for square root extraction

Set low-flow cutoff

Set meter for either relay or analog output

(factory set only – corresponding option installed)

Select display intensity

Set meter for analog output option

Set meter for relay option

Enter initial calibration for process inputs

51

Model 93284 Universal Input Meter Instruction Manual

Display Parameter Action/Setting

Curr

I lo

I Hi

volt

Vlo

VHi

diag

led

CJC

Cfg

pts

RELY

Aout

GoFF

SErL

Info

Current

I low

I high

Volt

V low

V high

Diagnostics

LED

CJC

CFG

Points

Relays

Analog output

Gain/offset

Serial

Information

Calibrating current input

Calibrate low current input

Calibrate high current input

Calibrating voltage input

Calibrate low voltage input

Calibrate high voltage input

Display parameter settings

Test display

Display cold junction compensation voltage

Display meter configuration

Display calibration points for process inputs

Display relay settings

Display analog output settings

Display gain and offset for process inputs

Display serial communication settings

Display software version and S/N information

52

Model 93284 Universal Input Meter Instruction Manual

For instructions on how to program

numeric values see Setting Numeric

Values, page 28.

Offset Adjustment (Adj)

This parameter allows the user to select an offset adjustment to the
temperature being displayed. Offset adjustment values can be either
positive or negative and can be any number within ±19.9°. The offset
adjustment value is programmed through the Adjust menu.

The offset adjustment feature can be useful to compensate for errors
due to thermocouple junctions or excessive lead wire resistance in
RTDs.

The offset adjustment value is automatically reset to zero whenever the
type of temperature sensor is changed (i.e. Thermocouple type or RTD
curve).

Celsius/Fahrenheit conversion of the offset adjustment value is auto­matic, see note 2 below for important limitations.

Notes:

1. Offset adjustment is available only when TC or RTD input is se­lected.

2. If adjustment value is greater than 11°C and the temperature
scale is changed to Fahrenheit, the maximum applied adjust­ment will be 19.9°F.

Noise Filter (fltr)

Most applications do not require changing this parameter. It is intended
to help attain a steady display with an unsteady (noisy) input signal.

The field selectable noise filter averages any minor or quick changes in
the input signal and displays the reading with greater stability.

Increasing the filter value will help stabilize the display, however this will
reduce the display response to changes on the input signal.

The filter level may be set anywhere from 2 to 199.
Setting filter value to zero disables filter function, and bypass setting

becomes irrelevant.

53

Model 93284 Universal Input Meter Instruction Manual

Noise Filter Bypass (byps)

The meter can be programmed to filter small input changes, but allow
larger input changes to be displayed immediately, by setting the bypass
value accordingly.

If the input signal goes beyond the bypass value, it will be displayed
immediately with no averaging done on it.

The noise filter bypass value may be set anywhere from 0.2 to 99.9. It
corresponds to percentage of full scale for process inputs and to de­grees Fahrenheit for temperature inputs.

Increasing the bypass value may slow down the display response to
changes on the input signal.

Serial Communications (serl)

The meter is equipped with serial communications capability as a stan­dard feature using Cole-Parmer Proprietary Data Communication (PDC)
Protocol. The Modbus RTU protocol is optional.

To communicate with a computer or other data terminal equipment, an
RS-232 or RS-422/485 adapter option is required, see Ordering Infor-
mation on page 3 for details.

Serl Prot

When using more than one meter in a multi-drop mode, each meter
must be provided with its own unique address. The address may be
programmed from 00 to 99 for PDC protocol and from 1 to 247 for
Modbu s protocol. The transmit delay may be set between 0 and 199
ms (see Serial Communication Adapter manual for more details).

The 93284 can also be connected directly to another 93284 meter
through a cable assembly (93284-24). This allows the user to copy all
the settings from one meter to another, using the Copy function.

Addr

bAud trde

Protocol Selection Menu (Prot)

The Protocol selection menu is used to select either the PDC or the
Modbus protocol. If Modbus option is purchased separately, it is neces­sary to enter a four-digit code to enable the Modbus protocol.

54

Model 93284 Universal Input Meter Instruction Manual

Select Menu (SElc)

The Select menu is used to select linear or square root function, display
intensity, and low-flow cutoff. Selection for relay or analog output is a
factory setting depending on the option installed.

• Output options are installed
and set up at the factory.

• Changing the output selec­tion will cause erroneous
operation.

*

seLc Func

cutF

The Output selection menu is for factory use only

*

Do not change output selection!

out

inty

Linear or Square Root Function (linr or Sqrt)

Meters are set up at the factory for linear function. The linear function
provides a display that is linear with respect to the input signal.

The square root function is used to linearize the signal from a differential
pressure transmitter and display flow rate in engineering units.

Advanced

Features

Press Enter to Accept Setting

SELc

Func

Linr

55

Sqrt

Model 93284 Universal Input Meter Instruction Manual

Low-Flow Cutoff (cutF)

The low-flow cutoff feature allows the meter to be programmed so that
the often-unsteady output from a differential pressure transmitter, at low
flow rates, always displays zero on the meter.

The cutoff value may be programmed from 0 to 9999. Below the cutoff
value, the meter will display zero. Programming the cutoff value to zero
disables the cutoff.

Advanced

Features

Press Enter to Accept Setting

SELc

Func

Press Up to Set Digit Value

Press Right to Select Next Digit

Press Menu to Exit at any Time

cutF

03.00

Set Cutoff

Value

out

Display Intensity (inty)

The Display Intensity function allows the selection of eight levels of in­tensity for various lighting conditions.

Advanced

Features

SELc

Func

inty

Press Enter to Accept Setting

Press Up to Select Value

Press Menu to Exit at any Time

int3

Select Display

Intensity Level

56

Next

Model 93284 Universal Input Meter Instruction Manual

e

MeterView

MeterView
and to act as a data logger.

MeterView® software allows all setup parameters to be saved to a file
for reporting, restoring, or programming other meters.

See Ordering Information, page 3 to order MeterView® software.

Note: PDC protocol must be selected to communicate with MeterView®.

®

software allows the 93284 to be programmed from a PC

®

Software

Meter Copy Function (Copy)

The Copy function is used to copy (or clone) all the settings from one
meter to other meters requiring exactly the same setup and program­ming (i.e. type of input, scaling, decimal point, filter, bypass, etc.).

Cable Assembly

Master Clon

C

o

P

y

Figure 16. Meter Copy Connection

Copy Function Requirements

To successfully copy settings from one
meter to another, both meters must have:

1. Same software version

2. Same baud rate setting

3. PDC protocol selected

See Determining Software Version,

page 65 for instructions.

57

Model 93284 Universal Input Meter Instruction Manual

Meter Cloning Instructions

NOTICE!

1. Connect the two meters using cable assembly 93284-24 or equiva­lent (e.g. Digi-Key P/N H1663-07-ND). Cable should not exceed
7' (2.1 m).

2. Power up both meters. Leave Clone meter in Run Mode.

3. Enter the Advanced features menu of the Master meter, see
Advanced Features Menu, page 50.

4. Scroll to Copy function using Up arrow button then press
Enter/Ack.

5. The meter displays the message Send. Press Enter/Ack, the dis­play flashes while sending data. The message done is displayed
when copying is completed.

Advanced

Features

Copy send

Press

Menu

to Exit and

Return to Run Mode

6. The Clone meter displays the memory address being programmed
then the message done when copying is completed. The meter ini­tializes and returns to Run Mode using the same settings as the
Master.

7. If meter to be cloned does not respond to the data being sent, refer
to Copy Function Requirements above.

Do not connect the two meters to
the same 4-20 mA loop while
cloning. Internal calibration may
be affected.

Display

Flashes While

Sending

done

58

Model 93284 Universal Input Meter Instruction Manual

Internal Calibration (ICal)

• There is no need to recalibrate the meter

when first received from the factory.

• The meter is factory calibrated prior to
shipment, for all input types, in milliamps,
volts, and degrees respectively. The cali­bration equipment is certified to NIST
standards.

The internal calibration allows the user to scale the meter without apply­ing a signal. This menu is not available if the meter is set up for TC or
RTD inputs.

The use of calibrated signal sources is necessary to perform the internal
calibration of the meter.

Check calibration of the meter at least every 12 months. Each input type
must be recalibrated separately if meter will be used with all input types.

Notes:

• If meter is in operation and it is intended to
accept only one input type (e.g. 4-20 mA),
recalibration of other inputs is not necessary.

• Allow the meter to warm up for at least
15 minutes before performing the internal
calibration procedure.

The Internal calibration menu is part of the Advanced features menu.

1. Press and hold the Right arrow and the Menu buttons, for three

seconds, to access the Advanced features of the meter (Press and
hold Right arrow first then Menu).

2. Press the Up arrow button to scroll to the Internal calibration menu
and press Enter/Ack.

3. The meter displays either current (Curr) or voltage (volt), accord­ing to the meter input setup. Press Enter/Ack to start the calibra­tion process.

59

Model 93284 Universal Input Meter Instruction Manual

Example for current input internal calibration:

4. The meter displays Low input current (I lo). Apply the low input
signal and press Enter/Ack. The display flashes for a moment
while meter is accepting the low input.

5. After the display stops flashing, a number is displayed with the
leftmost digit brighter than the rest. The bright digit is the active digit
that can be changed by pressing the Up arrow button. Press the
Right arrow button to move to the next digit.

6. Set the display value to correspond to the input signal being cali­brated.

7. The display moves to the high input calibration (I Hi). Apply the
high input signal and press Enter/Ack.

8. Set the display for the high input calibration in the same way as it
was set for the low input calibration.

For instructions on how to program

numeric values see Setting Nu-

meric Values, page 28.

I Cal

Set Display Value

Curr

I lo 04.00

The graphic above shows the calibration of the current input. The volt­age input is calibrated in a similar way.

Display

Flashes

While

Accepting

Input

for Low Input

I Hi

Calibrate

High Input

60

Model 93284 Universal Input Meter Instruction Manual

Tips:

• Low and high input signals can be any valid values within the

range of the meter.

• Observe minimum input span requirements between input 1

and input 2.

• Low input must be less than high input signal.

Error Message (Err)

An error message indicates that the calibration or scaling process was
not successful.

After the error message is displayed, the meter reverts to input 1, allow­ing the appropriate input signals to be applied.

The error message might be caused by any of the following conditions:

1. Input signal is not connected to the proper terminals, or it is con­nected backwards.

2. Wrong signal selection in Setup menu.

3. Minimum input span requirements not maintained.

Minimum Input Span

The minimum input span is the minimum difference between input 1 and
input 2 signals required to complete the calibration or scaling of the meter.

Input range Input 1 & input 2 span
4-20 mA 0.40 mA

±10 VDC

0.20 VDC

61

Model 93284 Universal Input Meter Instruction Manual

OPERATION

For process inputs, the meter is capable of accepting positive and nega­tive signals and displaying these signals in engineering units from -1999
to 9999 (e.g. a signal from -10 to +10 VDC could be displayed as -10.00
to 10.00).

The temperature inputs are displayed according to the input type and
temperature units (°F or °C) selected. Type T thermocouples can be
displayed with either 1° or 0.1° resolution.

Front Panel Buttons Operation

Button
Symbol

Description

Press to enter or exit Programming Mode,
view settings, or exit Max/Min readings

Press to reset Max/Min readings

Press to display Max/Min readings
alternately

Press to display Max/Min reading
indefinitely while displaying Max/Min

Press ACK to acknowledge relays

62

Model 93284 Universal Input Meter Instruction Manual

Maximum/Minimum Readings

The main function of the front panel buttons during operation is to dis­play the maximum and minimum readings reached by the process or
temperature inputs.

Actual

Reading

2468 Hi lo

9846 200

10 Sec Time Out

Press Up to Display and to
Toggle Between Max & Min

Press

Enter

to Hold Max/Min

Press

Press

1. Press Up arrow/Max button to display maximum reading since the
last reset/power-up.

2. Press Up arrow/Max again to display the minimum reading since
the last reset/power-up.

3. Press Enter/Ack to hold Max/Min display reading, the meter will
continue to track new Max/Min readings.

4. If Enter/Ack is not pressed, the Max/Min display reading will time
out after ten seconds and the meter will return to display the actual
reading.

5. Press Right arrow/Reset button to reset Max/Min while reading is
being displayed. Max/Min display readings are reset to actual
reading.

Right

to Reset Max/Min

Menu

to Exit Max/Min

63

Model 93284 Universal Input Meter Instruction Manual

MOUNTING DIMENSIONS

1.76"

(45mm)

2.45"

(62mm)

0.59"

(15mm)

3.2"

(81mm)

3.6"

(91mm)

Figure 17. Meter Dimensions – Side View

3.61"

(92mm)

4.68"

(119mm)

Figure 18. Case Dimensions - Top View

64

2.50"

(64mm)

Model 93284 Universal Input Meter Instruction Manual

TROUBLESHOOTING

The rugged design and the user-friendly interface of the meter should
make it unusual for the installer or operator to refer to this section of the
manual.

If the meter is not working as expected, refer to the Diagnostics menu
and recommendations below.

Diagnostics Menu (diag)

The Diagnostics menu is located in the Advanced features menu, to
access Diagnostics menu see Advanced Features Menu, page 50.

It provides an easy way to view the programmed parameter settings for
troubleshooting purposes. Press the Enter/Ack button to view the set­tings and the Menu button to exit at any time.

For a description of the diagnostics messages see Advanced Features
Menu & Display Messages, page 51.

Determining Software Version

To determine the software version of a meter:

1. Go to the Diagnostics menu (diAG) and press Enter/Ack but-

ton.

2. Press Up arrow/Max button and scroll to Information menu

(Info).

3. Press Enter/Ack to access the software number (SFT), version

(UER), and serial number (Sn) information. Write down the in­formation as it is displayed. Continue pressing Enter/Ack until
all the information is displayed.

65

Model 93284 Universal Input Meter Instruction Manual

Reset Meter to Factory Defaults

When the parameters have been changed in a way that is difficult to
determine what’s happening, it might be better to start the setup proc­ess from the factory defaults.

Instructions to load factory defaults:

1. Enter the Advanced features menu. See Advanced Features Menu,
page 50.

2. Press Up arrow to go to Diagnostics menu

3. Press and hold Right arrow/Reset for five seconds, press
Enter/Ack when display flashes reset.
Note: If Enter/Ack is not pressed within three seconds, display re­turns to Diagnostics menu.

4. The meter goes through an initialization sequence (same as on
power-up), and loads the factory default settings.

Press and Hold for 3 Sec

Flashing
Display

diag

rset

Meter Re-

Initializes

Press and Hold
for 5 Sec

66

Model 93284 Universal Input Meter Instruction Manual

Factory Defaults & User Settings

The following table shows the factory setting for most of the program­mable parameters on the meter. Next to the factory setting, the user
may record the new setting for the particular application. MeterView®
software allows the saving of all meter parameters to a file for restoring
meter settings, reporting, and copying settings to other meters.

Model: ______________ S/N: _______________ Date: _________

Parameter Display Default Setting User Setting

Input type

Programming

Input 1

Display 1

Input 2

Display 2

Decimal point

Relay 1

Action 1

Set 1

Reset 1

Relay 2

Action 2

Set 2

Reset 2

Fail-safe

Fail-safe 1

Fail-safe 2

Time delay

On delay 1

Off delay 1

On delay 2

Off delay 2

inpt

prog

InP1

Dis1

InP2

Dis2

dd.dd

Rly1

Act1

Set1

RSt1

Rly2

Act2

Set2

RSt2

flsf

Fls1

Fls2

dlay

On1

Off1

On2

Off2

4-20 mA

Scale

4.00 mA

4.00

20.00 mA

20.00

2 places

Automatic

7.00

6.00

Automatic

10.00

9.00

Off

Off

0 sec

0 sec

0 sec

0 sec

67

Model 93284 Universal Input Meter Instruction Manual

Parameter Display Default Setting User Setting

Password

Advanced
Features

Adjust

Filter

Bypass

Serial settings

Protocol

Address

Baud rate

Trans delay

Function

Cutoff value

Output option

Display intensity

Modbus defaults

Address

Parity

Byte-to-byte timeout*

pass

Adj

fltr

byps

serl

pdC

addr

baud

trde

Func

CutF

out

inty

addr

prty

tbyt

*Note:
The byte-to-byte timeout setting might be updated automatically de­pending on the baud rate selected and the previous timeout setting. The
minimum timeout allowed is saved to memory if a lower value is entered
(e.g. If user enters 0.00 with a baud rate of 300, 0.06 is saved).

0000 (unlocked)

0.0° (temp only)

10

0.2

PDC protocol

00

2400

10 ms

Linear

0.00 (disabled)

Factory set only

Level 2

247

Even

0.01 sec

68

Model 93284 Universal Input Meter Instruction Manual

Troubleshooting Tips

Symptom Check/Action

No display at all

Not able to change setup or pro­gramming, LoCd is displayed

Meter displays error message
during calibration (err)

Meter displays

• open

• 9999

• -1999

• Displays negative number,

not responding to RTD.

Display alternates between

1. Hi and a number

2. Lo and a number

Display response is too slow

Inaccurate temperature reading

If the display locks up or the meter
does not respond at all

Relay operation is reversed

Relay and status LED do not
respond to signal

Meter not communicating with
MeterView

Other symptoms not described
above

®

or other programs

Check power at power connector

Meter is locked, enter correct four-digit
password to unlock

Check:

1. Signal connections

2. Input selected in Setup menu

3. Minimum input span requirements
Check:

1. Input selected in Setup menu

2. TC/RTD Switch position

3. Corresponding signal at Signal
connector

Press Menu to exit Max/Min
display readings.

Check filter and bypass values

Check:

1. Temperature units (°F or °C)

2. TC type or RTD curve selected

3. Offset adjustment

4. TC wire used

5. Calibration

Cycle the power to restart the
microprocessor.

Check:

1. Fail-safe in Setup menu

2. Wiring of relay contacts

Check:

1. Relay action in Setup menu

2. Set and reset points

Check:

1. Serial adapter and cable

2. Serial protocol selected

3. Meter address and baud rate

4. MeterView address and baud rate

Call Technical Support for
assistance.

69

Model 93284 Universal Input Meter Instruction Manual

QUICK USER INTERFACE REFERENCE GUIDE

Run Mode

Setup

Program

Password

Locked Unlocked

Display

Max/Min

Input 4-20 mA

0-10 V

RTD

TC

A385

A392

Type J

Type K

Type T

Type T.0

Type E

TC or RTD?
Yes No

Scale

Calibrate

To Password

TC or RTD?
Yes No

F or C

Relays

Analog

output

F

C

Relay 1

Relay 2

Failsafe

Delays

Scale

Sensor

break

To Program

70

Decimal

Point

Action

Set point

Reset point

Failsafe 1

Failsafe 2

Delay 1

Delay 2

dddd

d . ddd

dd . dd

ddd . d

To Delays

Auto

Auto & Manua l

Latch

Latch w/Clear

Pump Alt

Off

On

Off

To Program

To

Set point

Model 93284 Universal Input Meter Instruction Manual

Pushbutton Function
Menu Go to Programming Mode or leave Programming, Advanced

Right Arrow Move to next digit.
Up Arrow Move to next selection or increment digit.
Enter/Ack Accept selection/value and move to next selection.

Right Arrow & Menu held for 3 seconds enters Advanced Features

Max/Min Mode

While in Run Mode, pressing Up Arrow will initiate Max/Min Mode. Up Arrow
toggles between Max & Min displays, and Right Arrow resets the Max/Min to the
current value. Press Menu or wait 10 seconds to return to Run Mode. Pressing
Enter/Ack will disable the 10 second timeout and continuously display Max or Min.

Features, and Max/Min Modes.

Press & hold Right arrow and
Menu for 3 seconds to access
Advanced Features Menu

TC or RTD?
Yes No

Adju st

Filter

Bypass

Serial

Copy Send

Select

TC or RTD?
Yes No

Initial

Calibrate

Diagnostics

Advanced

Features

Function

cutoff

output

Intensity

When the meter is locked, Adjust,
Filter and Bypass can only display
their settings, and the Copy and
ICAL functions are not available.

Operational Modes

Right Arrow &

Menu for 3

seconds

Menu

Linear

Sq. Root

Run

Menu

Program

Menu

Up Arrow

Protocol

Address

TX Delay

Modbus?
No Yes

Parity

Byte-to-byte

timeout

Baud

Menu

Max &

Min

Modbus

PDC

71

Model 93284 Universal Input Meter Instruction Manual

Contact Information

• For customer service and application assistance

Call: [phone]

Fax: [phone]

Email: [e-mail]

• In Canada

Call Labcor at: [phone]

• In the UK

Call Cole-Parmer Instrument Co. Ltd.

0500 345 300

• All other countries

Fax: [phone]

R

Cole-Parmer Instrument Company

625 E. Bunker Hill Court, Vernon Hills, IL 60061
Tel [phone] • Fax [phone]

www.coleparmer.com

LIM765CP_B.doc

SFT013/031 Ver 3.0 & up

11/04