Model 535
4-20/10-50 Milliamp/Voltage
Practical Instrument Electronics
4 to 20 mA Loop Functions
Source and Read 0.000-24.000 mA
Simulate 2-Wire Transmitters
Power 2-Wire Transmitters and Read 0.000-24.000 mA
Display current in mA or -25.00 - 125.00 % of 4-20 mA
10 to 50 mA Loop Functions
Source and Read 0.000-50.000 mA
Simulate 2-Wire Transmitters
Power 2-Wire Transmitters and Read 0.000-50.000 mA
Display current in mA or -25.00 - 105.00 % of 10-50 mA
Read Voltage Function
Read 0.00 to ± 30.00 VDC with 4X over range ability
Source Voltage Function
Source 0.000 to 24.000 VDC
High Accuracy
±0.025% of reading
Full 5 Digit Display
Bar graph for quick reference of input and output levels
High contrast graphic display viewable in all lighting
conditions and angles
EZ-Dial Knob
Change the speed of dialing your test point by just
pushing down on the knob
Easily adjust output by 0.001 mA (0.01 %) or 0.100 mA
(1.00 %)
EZ-Check Switch with EZ-Step Button
3-position tactile switch with push button for true onehanded calibrations
Push button for stepping through calibration points
16 different step sizes
Hands-free auto step and auto ramp modes
Selectable soak and step time for working with valves
Industry Standard Input/Output Connections
Conveniently located banana jacks on top panel
Optional Analog Output
Model 535A includes a 10 mV/mA proportional output
provided on bottom panel banana jacks for connection to
chart recorders and data loggers
Dual Range Loop Calibrator
Features
Uses 4 AA Alkaline Batteries
Superior battery life of 10 hours in source mode
>40 hours battery life in read mode
Easy access to battery compartment
240 VAC Tolerant
Fuse-less protection from accidental misuse
Lightweight and rugged with a solid feel
Convenient Velcro® hand strap allows for a firm confident grip or
attachment to pipes and ladders.
Practical Instrument Electronics, Inc. Copyright 2003. All rights reserved.
535-9001 2/28/05 1-4
Model 535 Datasheet
Description
The Practical Instrument Electronics Model 535 Dual Range Loop Calibrator makes testing, troubleshooting, and calibrating your 4-20
and 10-50 milliamp process loops easy as pie. Change ranges in seconds - the Model 535 is two calibrators in one convenient
package. Easily recall min/max readings with the EZ-Check feature. Powerful manual and automatic stepping and ramping features
are found on the dual-action EZ-Step Switch providing one-handed or hands-free operation. Independent step size, step time, and
soak time parameters offer the most step and ramp flexibility of any calibrator in its class.
Specifications
General Specifications:
(Unless otherwise indicated all specifications are rated from a nominal 23 °C, 70 % RH for 1 year from calibration)
Operating Temperature Range -20 to 60 °C (-5 to 140 °F)
Storage Temperature Range -30 to 60 °C (-22 to 140 °F)
Relative Humidity Range 10 % ≤RH ≤90 % (0 to 35 °C), Non-condensing
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)
Battery 4 AA Alkaline, 120 VAC 50/60 Hz AC adaptor included
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
Model 535A Analog Output 10 mV/mA ±(0.1% + 0.04mV), 5 ppm/°C
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
Accuracy ≤ ± (0.025 % of reading + 0.004 mA)
Temperature Effect ≤ ± 50 ppm/°C of range
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:
Loop Compliance Voltage ≥ 43 Volts
Loop Drive Capability 1200 Ω at 20 mA/800 Ω at 50 mA for entire battery life
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 nominal (100 Ω load)
Power measure ≥ 10 hrs at 12 mA/≥ 5 hrs at 30 mA nominal (100 Ω load)
Selectable EZ-Step(s) for Source Mode/2-Wire Transmitter Simulation:
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
Practical Instrument Electronics, Inc. Copyright 2003. All rights reserved.
535-9001 2/28/05 2-4
Loading...