PIE 535 Operating Instructions Manual

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Practical Instrument Electronics

Model 535

4-20/10-50 mA/V Loop Calibrator

Operating Instructions

Basic Keypad Operations

j EZ-Check™ Switch/EZ-Step™ Pushbutton

Slide the switch to select the user stored values for calibration points. Press the button to adjust the output by the user defined step size. Press and hold the button to activate the auto step/ramp mode.

m UNITS/STEP TIME Button

Press and release UNITS/STEP TIME to change how current is displayed: either in milliamperes or % of 4-20/10-50 mA. Voltage is only displayed in volts.

Press and hold UNITS/STEP TIME to change step size.

n READ/SOAK TIME Button

Press and release READ/SOAK TIME to change read modes. These are:

• Read Milliamps

• Power and Measure 2-Wire Transmitter

• Read Volts

Press and hold READ/SOAK TIME to change soak time.

 STORE/CLEAR Button

In any source mode:

Press STORE/CLEAR to save the current reading in the EZCheck• HI or LO position. The EZ-Check• switch must be set to HI or LO. The display will flash “STORED” to confirm.

In any read mode:

Press STORE/CLEAR to clear the values saved in the EZ-Check• HI and LO positions. The display will flash “CLEARED” to confirm.

 EZ-Dial™ Knob

Turn the EZ-Dial• knob to adjust the output level. Press and turn to adjust 100X faster.

k SOURCE/STEP SIZE Button

Press and release SOURCE/STEP SIZE to change source modes. These are:

• Source Milliamps

• 2-Wire Transmitter Simulate

• Source Volts

Press and hold SOURCE/STEP SIZE to change step size.

l ON/OFF Button

Press ON/OFF to turn the Model 535 on or off.

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Model 535 Operating Instructions

Model 535 Configuration

Press the EZ-Dial• Knob while turning the Model 535 on to access the configuration mode. Turn the EZ-Dial• Knob to select configuration items. Press the EZ-Dial• Knob to change configuration items. Turn the unit off or just wait approximately 8 seconds to exit the configuration mode.

Auto Off - ON (default)/OFF

Auto Off is ON, by default, to save battery life by turning the unit off after 30 minutes of inactivity. Turn Auto Off to OFF to preven automatic shutdown. This is typically useful for manual loading or continuous use.

EZ-Step•

If EZ-Step• is ON manual and automatic stepping/ramping is available. If EZ-Step• is OFF the EZ-Step• pushbutton will be disabled and the step direction indicator will not be displayed.

EZ-Check•

If the EZ-Check• HI/LO Readings option is ON, the highest and lowest readings will automatically be saved in the HI and LO EZCheck™ positions.

If this option is OFF the HI and LO positions will show the current reading.

4-20/10-50 Range (default) ON

Select either 4-20 or 10-50 milliamp range. The Model 535 scales % mode display and the bar graph accordingly.

Factory Reset ON/OFF (default)

If Factory Reset is changes made in the Model 535 Configuration options, returning the unit to its simplest factory configuration.

- ON/OFF (default)

HI/LO Readings ON/OFF (default)

ON, the unit will restore all factory defaults when the Model 535 is turned OFF and back ON. This will reset any

EZ-Dial• Knob

Adjust the output up and down with the EZ-Dial• knob. The increment is 0.001 mA (or 0.01 % if display units are % of 4-20/10-50 mA.) Press while turning to adjust 100X faster – 0.100 mA (or 1.00 %.)

EZ-Check• Switch

The EZ-Check™ switch has three positions -- high, set, and low. Its position is shown at the left edge of the display with “HI” and “LO” indicators. Use of the EZ-Check• switch depends on mode:

Source Modes:

Slide the EZ-Check• switch to the HI and LO positions to recall the settings stored in those positions. While in the HI and LO positions, dial the EZ-Dial• knob to change the display. Press STORE/CLEAR to save new settings in the display will flash “STORED” to confirm.

Hint: For faster calibrations, the position of the switch can be felt. This feature allows continuous monitoring of the device being calibrated without looking back at the Model 535 display. This is also useful in poor lighting or under difficult operating conditions.

Read Modes:

In read modes, the Model 535 calibrator records the maximum and minimum readings observed in each switch to the HI and LO positions to display the readings. Press STORE/CLEAR to clear the readings. The display will flash “CLEARED” to confirm. By default, the Model 535 has EZ-Check• HI/LO Readings OFF.

HI and LO positions. The

mode. Slide the EZ-Check•

EZ-Step• Pushbutton/ Manual Step

The EZ-Step• pushbutton is a feature only in source modes.

Press and hold the EZ-Step• pushbutton for less than one second to cause the output to step up or down by the EZ-Step• size.

The EZ-Step• direction is indicated on the display ( or ). Press the EZ-Dial• knob to change the step direction.

Stepping and auto step/ramp limits are defined by the EZ-Check• HI and LO settings. The step direction changes when a limit is reached.

The step size is figure 1. By default, the Model 535 has EZ-Step• OFF.

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computed as the difference between the EZ-Check• HI and the EZ-Check• LO divided by the number of steps. See

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Model 535 Operating Instructions

time

soak time

step size = (EZ-Step HI – EZ-Step LO) •# of steps

step time = ramp time•# of

Auto Step/Ramp

Press the EZ-Step• pushbutton for more than one second to activate auto step/ramp mode. The Model 535 will automatically step by the selected EZ-Step• size and time. Press the EZ-Step• pushbutton again to deactivate auto step/ramp mode.

The EZ-Step• direction is indicated on the display ( or ). Press the EZ-Dial• knob to change the step direction. The step direction can be changed while automatically stepping/ramping.

Stepping and auto step/ramp reached.

Figure 1 will show how the Step/Ramp Parameters are used to configure automatic stepping/ramping.

limits are defined by the EZ-Check• HI and LO settings. The step direction changes when a limit is

Figure 1

ramp

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

time

Note: The Model 535’s ability to detect overload/undervoltage conditions may be limited by the rate of change in the output when using automatic stepping/ramping. Turn auto step/ramp off while connecting or disconnecting the Model 535.

Quick Reference Bar Graph

The Quick Reference Bar Graph indicates the input and output level on the Model 535 in % of 4-20/10-50 mA with 1% resolution.

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Model 535 Operating Instructions

To Change the EZ-Step•Size:

To Change the Soak Time:

To Change the EZ-Step

Direction:

Read Milliamp

Manual Step and Auto Step/Ramp Parameter

1. Press and hold the SOURCE/STEP SIZE button for more than ¾ of a second.

2. The display will flash “EZ-STEP SIZE”.

3. Turn the EZ-Dial• knob to select from 2 to 16 steps between the EZ-Check• limits.

4. Turn the EZ-Dial• clockwise past 16 steps to select continuous ramp mode.

5. Press the SOURCE/STEP SIZE button again to return to the normal display.

•

Note: If the EZ-Step

To Change the EZ-Step•

1. Press and hold the UNITS/STEP TIME button for more than ¾ of a second.

2. The display will flash “EZ-STEP TIME”.

3. Turn the EZ-Dial• knob to select from 5 to 900 second ramp time. The time per step is calculated based on the selected EZ-Step• size.

4. Press the SOURCE/STEP SIZE button to return to the normal display.

1. Press and hold the READ/SOAK TIME button for more than ¾ of a second.

2. The display will flash “SOAK TIME”.

3. Turn the EZ-Dial• knob to select from 0 to 900 second soak time.

Note: A soak time of 0 defeats the soak period. The step time will be used instead.

4. Press the READ/SOAK TIME button again to return to the normal display.

option is turned off, the display will flash “EZ-STEP OFF”.

Time:

1. Press and release the EZ-Dial• knob without turning.

2. The display will change to show the EZ-Step• direction selected ( or ).

Connect the Model 535 in series with the process loop to

monitor current. Observe correct polarity. Current

limiting above 24 mA (52 mA if 10-50 range is selected)

is indicated by a flashing “CURRENT LIMITED” display.

Modes of Operation

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Model 535 Operating Instructions

Read Volts

Power and Measure 2 Wire Transmitter

The Model 535 provides power to the process loop while

displaying output current. Use this mode to test a

transmitter’s ability to control loop current. Current

limiting above 24 mA (52 mA if 10-50 range is selected)

is indicated by a flashing “CURRENT LIMITED” display.

The Model 535 measures +/- 30 VDC with 4X overrange

ability. The display flashes “OVERRANGE” when the 30

volt limit is exceeded.

Connect the Model 535 directly to 4-20/10-50 mA

receiver equipment, alarms, panel meters, etc. Use the

EZ-Dial• Knob and EZ-Check• Switch to adjust loop current. The display flashes “HIGH Ω” when the loop

resistance is too high or the leads are open.

Source Milliamp

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Model 535 Operating Instructions

Relative Humidity Range

10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing

Battery

4 - AA Alkaline Optional 120 VAC 50/60 Hz AC adaptor included

2 Wire Transmitter Simulate

Substitute the Model535 for a 2 wire transmitter. Use

the EZ-Dial• Knob and EZ-Check• Switch to adjust loop

current. At least 2 volts of loop power is required, else

the display flashes “CHECK LOOP SUPPLY.”

Source Volts

The Model 532 sources 0.000-24.000 volts. This is useful

for powering transmitters and receiver equipment. Use

the EZ-Dial• Knob and EZ-Check• Switch to adjust

output voltage. The display flashes “LOW • ” when the

output is overloaded.

Specifications

General Specifications:

Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration with >1 M• load on external banana jack access to 10 • current sense (Model 535A).

Operating Temperature Range -20 to 60 °C (-5 to 140 °F)

Storage Temperature Range -30 to 60 °C (-22 to 140 °F)

10 % ≤RH≤ 70 % (35 to 60 °C), Non-condensing

Size 7.00 X 3.30 X 2.21 inches (177.8 x 83.8 x 56.1mm)

Weight 14.0 oz (397 grams)

Miscellaneous Low battery indication with nominal 1 hour of operation left

Over-voltage protection to 120 Vrms (rated for 30 seconds) or 240 Vrms (rated for 15 seconds)

Bar graph display with 1% resolution of 4-20/10-50 mA signal scale

High contrast graphic liquid crystal display with 0.45” (11.4 mm) high digits

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Model 535 Operating Instructions

Accuracy

≤ ± (0.025 % of reading + 0.004 mA)

Temperature Effect

≤ ± 50 ppm/°C of range

Loop Compliance Voltage

≥ 43 Volts

Loop Drive Capability

1200 Ω at 20 mA/800 Ω at 50 mA for entire battery life

Overload/Current Limit Protection

≤ 24 mA (4-20 range)/ ≤ 52.5 mA (10-50 range) nominal

Battery Life

≥ 40 hours typical

Miscellaneous

Open loop or out of compliance conditions are indicated by appropriate error display

Common Specifications for all Current Modes:

Ranges 0.000 to 24.000 mA, -25.00 to 125.00% of 4-20 mA

0.000 to 52.000 mA, -25.00 to 105.00% of 10-50 mA

Resolution 0.001 mA and 0.01 %

Step/Ramp Timebase Accuracy 0.01% of 4.9152 MHz

Source/Power and Measure 2-Wire Transmitter Specifications:

Miscellaneous Open loop or out of compliance conditions are indicated by appropriate error display

Battery life in:

Source mode ≥ 18 hrs at 12 mA/≥ 9 hrs at 30 mA typical

Power measure ≥ 10 hrs at 12 mA/≥ 5 hrs at 30 mA typical

Selectable EZ-Step(s) for Source Mode/2-Wire Transmitter S imulation:

2 to 16 selectable step settings

Step size is determined by the selected high & low ranges

Selectable time settings for stepping and soak:

STEP: 5 to 900

seconds SOAK: 0 to 900 seconds

Read mA Specifications:

Voltage Burden ≤ 2V

2-Wire Transmitter Simulation Specifications:

Overload/Current Limit Protection ≤ 24 mA (4-20 range)/ ≤ 52.5 mA (10-50 range) nominal

Loop Voltage Limits 2-90 VDC

Battery life ≥ 40 hour typical

Selectable EZ-Step(s) for Source Mode/2-Wire Transmitter S imulation:

2 to 16 selectable step settings

Step size is determined by the selected high & low ranges

Selectable time settings for stepping and soak:

STEP: 5 to 900 seconds SOAK: 0 to 900 seconds

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Model 535 Operating Instructions

Temperature Effect

≤ ± 200 ppm/°C of range

Input Resistance

≥ 1 MΩ

Source Range:

0.000 to 24.000 VDC

Accuracy

≤±(0.025%RDG + 0.004 V) ±50ppm/°C of range

4-20/10-50 Milliamp mA/V Loop Calibrator

Model 535

Read Voltage Specifications:

Range: 0.00 to 30.00 VDC (with 4X over range)

Resolutions 0.01 VDC

Accuracy 0.00 to 30.00 VDC ≤ ± (0.1 % of reading ±0.1 V)

Source Voltage Specifications:

Output Resistance ≤0.3 Ω

Source Current ≥20.000 mA

Ordering Information:

Includes:

Calibration Test Data

NIST Traceable Certificate

Carrying Case

60 Hz AC adapter

Option:

50 Hz AC adapter 020-0101

Option:

External banana jack access to internal 10 • current sense.

020-0200 (included)

020-0102 (included)

Model 535A

Our equipment is guaranteed against defective material and workmanship (excluding batteries) for a period of three years from the

date of shipment. Claims under guarantee can be made by returning the equipment prepaid to our factory. The equipment will be

repaired, replaced or adjusted at our option. The liability of Practical Instrument Electronics (PIE) is restricted to that given under our

guarantee. No responsibility is accepted for damage

condition shall Practical Instrument Electronics, Inc. be liable for any special, incidental or consequential damage.

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Warranty

, loss or other expense incurred through sale or use of our equipment. Under no

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PIE 535 Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual