Omega Products DPG1000ADA-15G-1N User Manual

DIGITAL PRESSURE GAUGES

WITH ALARMS AND ANALOG OUTPUT FUNCTIONS

DPG1000ADA

All Models

349

DPG1000ADA AC/DC Powered with Dual Alarms

DPG1000ADA-300G-1N,

SPECIFICATIONS

Accuracy: ±0.25% FSO or better,

±1 least-significant digit (includes linearity, hysteresis, repeatability)

Controls and Location: Display zero/span, non-interactive, ±15% range; setpoint 1 and setpoint 2, 0 to 100% range; top-accessible, multiturn potentiometers

Alarm Deadbands (Hysteresis): 1% of FSO, standard

Alarm Outputs: Dual form “C” (SPDT) relay contacts; individual setpoint 1 and setpoint 2 settings via top-accessible multiturn potentiometers; high/low alarm configuration standard, others available; relay contacts rated 1 A/24 Vdc,

0.5 A/115 Vac, non-inductive

$349, shown actual size. See page G-15 for dimensions.

Alarm Indicators: Bicolor

(red/green) LEDs on front panel

Test Function: Front-panel TEST button, when depressed, toggles both SP1 and SP2 alarm status, independent of pressure input, to allow testing of system operation

Alarm Response Time:

100 ms typical Power: Any AC source of 8 to 24 Vac,

50/60 Hz, or any DC source of 9 to 32 Vdc, 1.0 W maximum; optional wall-mount power supply available to operate on 115 Vac (DPG1000-PS)

Electrical Connection: 0.9 m (3') long, 2-conductor 22 AWG cable for power;

0.9 m (3'), 6-conductor 22 AWG cable for alarm contacts

DPG1000DAR DC Powered with Dual Alarms and

DPG1000DAR

All Models

375

4 to 20 mA Output

SPECIFICATIONS

Accuracy: ±0.25% FSO or better, ±1

least-significant digit (includes linearity, hysteresis, repeatability)

Controls and Location: Display zero/span, non-interactive, ±15% range; setpoint 1 and setpoint 2, 0 to 100% range; test calibration level, 0 to 100% range; top-accessible, multiturn potentiometers analog output zero/span; internal potentiometers

Alarm Deadbands (Hysteresis):

1% of FSO, standard Alarm Outputs: Dual form “C” (SPDT)

relay contacts; individual setpoint 1 and setpoint 2 settings via top-accessible multiturn potentiometers; high/low alarm configuration standard; relay contacts rated 1 A/24 Vdc, 0.5 A/115 Vac, non-inductive

Alarm Indicators: Bi-color (red/green) LEDs on front panel

Alarm Response Time: 100 ms typical

Analog Output:

4 to 20 mA DC;

output drive (compliance) determined by power source

Analog Output Response Time: 50 ms, typical

Test Function:

Front-panel TEST button, when depressed, toggles both SP1 and SP2 alarm status and simultaneously sets display and analog output to “calibration” level, independent of pressure input, to allow testing system operation

Power: Any DC source of 9 to 32 Vdc, 1.0 W max

Electrical Connection:

0.9 m (3') long, 4-conductor 22 AWG shielded cable for power and retransmitted output; 0.9 m (3') long, 6-conductor 22 AWG cable for alarm contacts.

G-17

DPG1000DAR-300G-1N,

$375, shown actual size.

See page G-15 for dimensions.

DIGITAL PRESSURE GAUGES WITH ALARMS AND ANALOG OUTPUT FUNCTIONS

egard to the analog output

sing the DPG1000ADA and

U DPG1000DAR Alarm Outputs

Normal (Fail-safe) vs. Reverse Action—The convention for alarm

action is that with the normal or fail-safe configuration, the alarm output relays will be CLOSED (relay energized) for a clear or non-alarm condition and OPEN (relay not energized) for an alarm condition. This is primarily for users who require an alarm condition if the gauge loses power or suffers a catastrophic failure. In the wiring diagrams, the normally closed and normally open designations refer to standard relay terminology (i.e., the relay contact status with the relay coil not energized).

Therefore, with the normal (fail-safe) configuration in a green or non-alarm condition, the relay will be energized so that continuity can be expected between the common and normally open leads. In a red or alarm condition, the relay will be open (not energized) so that continuity can be expected between the common and normally closed leads.

Contact Rating and Protection

The contacts of the alarm relays are rated at 1 A/24 Vdc or 0.5 A/ 115 Vac. Switching loads greater than the rating, or switching large inductive loads, will shorten the useful life of the contacts. In lowlevel switching or with dry contacts, the user should consider whether external contact protection, such as snubber networks or arc suppression networks, is required to protect the contacts.

In addition, no internal fusing is included in the DPG1000 contact circuits. The circuit external to the gauge alarm outputs should be fused by the user in applications in which good design dictates this practice.

Using the DPG1000DAR Analog Output

The analog output is easy to use if a few system considerations are observed. The DPG1000DAR is DC powered, with the gauge power supply (–) tied to the 4 to 20 mA (–). Therefore, the DC supply (–) lead should be considered common with

r (–) or ground connection in the user’s system.

Be sure to observe the output compliance (voltage drive) capabilities of the gauge. The compliance, and therefore the maximum loop resistance the output can drive, is a function of the supply voltage to the gauge. Consult the manual for maximum loop resistance vs. supply voltage. Too large a loop resistance will cause the gauge output to “limit” or saturate before reaching its full 20 mA output.

MOST POPULAR MODELS HIGHLIGHTED!

To Order (Specify Model Number)

RANGE (psi) MODEL NO. PRICE COMPATIBLE METERS AC/DC POWERED/DUAL ALARMS

0 to 15.00 DPG1000ADA-15G-1N $349 N/A 0 to 100.0 DPG1000ADA-100G-1N 349 N/A 0 to 300 DPG1000ADA-300G-1N 349 N/A 0 to 500 DPG1000ADA-500G-1N 349 N/A 0 to 1000 DPG1000ADA-1KG-1N 349 N/A

DC POWERED/DUAL ALARMS/ANALOG OUTPUT

0 to 15.00 DPG1000DAR-15G-1N $375 0 to 100.0 DPG1000DAR-100G-1N 375 0 to 300 DPG1000DAR-300G-1N 375 0 to 500 DPG1000DAR-500G-1N 375 0 to 1000 DPG1000DAR-1KG-1N 375

Comes complete with operator’s manual.

Note: To order another alarm configuration, replace “-1N” with alarm configuration from table above. Ordering Examples: DPG1000ADA-100G-1N, AC/DC-powered unit with range of

0 to 100.0 psig and standard-acting dual alarms in the HI/LO configuration, $349. DPG1000DAR-100G-1N, DC-powered unit with range of 0 to 100.0 psig, analog output

and standard-acting dual alarms in the HI/LO configuration, $375. Units available with 15 and 100 psi absolute pressure range. Change “15G” in model number

to “15A” or “100G” to “100A” and add $20 to price.

ACCESSORY

MODEL NO. PRICE DESCRIPTION

DPG-1000-PS $25

G-18

Wall mount 115 Vac power supply for DPG1000ADA units

DPG1000ADA-300G-1N, $349, shown smaller than actual size. See page G-15 for dimensions.

⁄4 NPT Pressure

Snubbers $12.75

PS-4G = Gas PS-4E = Lt Oil PS-4D = Dense Lq

DP41-E, DP25B-E, DP24-E DP41-E, DP25B-E, DP24-E DP41-E, DP25B-E, DP24-E DP41-E, DP25B-E, DP24-E DP41-E, DP25B-E, DP24-E

PRESSURE

GAUGES