RS PRO RS-135 User manual

Instruction Manual
RS-135
4-20mA Loop Calibrator & Thermometer

4-20mA Loop Calibrator & Thermometer / EN
This unit passes the following tests:
EN 61326-1 : 2013
Safety Symbols
Please read the statement thoroughly to prevent injury or loss
of life, and prevent damage to this product.
Earth (ground)
DC (Direct Current)
Conforms to relevant European Union
directives.

4-20mA Loop Calibrator & Thermometer / EN
Do not dispose of this instrument as unsorted
municipal waste. Contact a qualified
recycler for disposal.
Please remove all the test leads
before performing maintenance,
cleaning and battery replacement,
etc.

4-20mA Loop Calibrator & Thermometer / EN

4-20mA Loop Calibrator & Thermometer / EN
Table of Contents
FEATURES:.............................................................................................................1
APPLICATIONS: .....................................................................................................1
I. PANEL DESCRIPTION.........................................................................................2
II. OPERATION........................................................................................................7
1. VOLTAGE SOURCE....................................................................................................7
1a. 0~24V...................................................................................................................7
2. CURRENT SOURCE...................................................................................................9
2a. SOURCE (4~20mA, 0~24mA) ..........................................................................9
2b. LED Brightness Testing (0~24mA) ................................................................10
3. FREQUENCY SOURCE (HZ).....................................................................................12
3a. 3Vpp, 1~20KHz, Square Wave..................................................................... 12
3b. DUTY..................................................................................................................13
4. VOLTAGE MEASURE...............................................................................................14
4a. DC 0~24V ..........................................................................................................14
5. CURRENT MEASURE ..............................................................................................16
5a. DC 0.005~24mA............................................................................................... 16
5b. LOOP+ MEASURE and Supply 24V Loop................................................. 18
6. TEMPERATURE MEASURE......................................................................................19
6a. Measure TC Thermocouple Signals...........................................................19
6b. Select TYPE and Temperature units..........................................................20
III. SCANNING FOR SOURCE..............................................................................21
1. VOLTAGE SCANNING FOR SOURCE........................................................................21
1a. Functions of Voltage Scanning for SOURCE ..........................................21
1b. Connections and LCD displays for Auto-Ramp and Auto-Step.........22

4-20mA Loop Calibrator & Thermometer / EN
2. CURRENT SCANNING FOR SOURCE.......................................................................24
2a. Functions of Current Scanning for SOURCE..........................................24
2b. Connections and LCD displays for Auto-Ramp and Auto-Step.........25
IV. ELECTRICAL SPECIFICATIONS....................................................................27
V. GENERAL SPECIFICATIONS ..........................................................................30
VI.MAINTENANCE & CLEANING........................................................................31
LIMITED WARRANTY...........................................................................................32

4-20mA Loop Calibrator & Thermometer / EN
06/04/2018 Version No. 1 1
FEATURES:
1. Source 4~20mA, 0~24mA with 1μA resolution (1KΩ load, 24V loop supply),
basic accuracy 0.025%.
2. Source 0~24.000V with 1mV resolution.
3. Source frequency 1~20000Hz square wave with programmable duty cycle
(1~99%).
4. Auto step and auto ramp for sourcing mA, V.
5. Easy fixed 25% up and down, or programmable percentage (1~99%) increase
and decrease (mA, V).
6. Measure DC mA with loop power (24V output).
7. Measure DC V.
8. Measure Temperature (°C, °F) of 11 types of thermocouples (K, J, E, T, R, S,
N, L, U, B and C).
9. Calibrator grade precision temperature measurement with 0.1

C & 0.1

F
resolution.
10. Detection of thermocouples disconnection.
11. Source and Measure at the same time.
12. Warning for overload, output open (mA) or short (V).
13. Short circuit protection for output.
14. Battery power indication (%) when turn on the calibrator.
APPLICATIONS:
1. Calibration of 4~20mA panel meters.
2. LED brightness testing (0~24mA).
3. Temperature calibration of panel meters or instruments for 11 types of
thermocouples.

4-20mA Loop Calibrator & Thermometer / EN
2 06/04/2018 Version No. 1
I. PANEL DESCRIPTION
1. LCD display 5. Output terminal (+)
2. Function buttons 6. Output terminal (-)
3. Temperature input socket 7. V, mA input terminal (+)
4. Output function sliding switch 8. Input terminal (-)

4-20mA Loop Calibrator & Thermometer / EN
06/04/2018 Version No. 1 3
1. “MEASURE” symbol appears when under MEASURE mode.
2. HOLD symbol appears when MEASURE data is held.
3. Symbol indicates Auto-power-off.
4. This symbol appears when sub-functions of MEASURE are being used.
5. Low battery symbol.
6. Negative symbol for MEASURE value.
7. Symbol indicates the MEASURE is for DC.
8. Temperature units for MEASURE.
9. Status of MEASURE function.
10. MEASURE value display.

4-20mA Loop Calibrator & Thermometer / EN
4 06/04/2018 Version No. 1
11. “SOURCE” symbol appears when under SOURCE mode.
12. This symbol appears when sub-functions of SOURCE are being used.
13. Symbol indicates % step function output.
14. Symbol indicates 0~100% ramp scanning of output.
15. Warning symbol for Output overload (or there is no connection on SOURCE
terminals).
16. Symbol indicates the type of thermocouples.
17. mA Current output range.
18. SOURCE value display.
19. Symbol indicates “duty cycle” of frequency output.
20. % for step output or duty cycle % of frequency output (SOURCE).
21. Value display for %, or Battery power indication, or Sourcing percentage.
22. Status of SOURCE function.