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+603-5621 5786

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08:30 - 17:30

TES PROVA-135 4-20mA Loop Calibrator + Thermometer

The handheld multifunction process calibrator delivers precise 4–20 mA sourcing, voltage, frequency, and temperature measurement. Ideal for industrial panel meter calibration and thermocouple testing.

  • Source 4–20 mA, 0–24 mA with 1 µA resolution
  • DC voltage source: 0–24 V with 1 mV resolution
  • Frequency source: 1–20,000 Hz square wave with programmable duty cycle
  • Auto step and auto ramp for mA and V

Description

The handheld process calibrator allows technicians to source and measure electrical signals efficiently. It can generate 4–20 mA and 0–24 mA currents with 1 µA precision and 0–24 V DC voltages with 1 mV resolution. The device produces square-wave frequencies from 1 Hz to 20,000 Hz with a fully programmable duty cycle of 1–99%. These features make it suitable for testing industrial meters, panel instruments, and LED brightness.

Technicians can measure DC mA, DC V, and temperature at the same time. It supports 11 types of thermocouples, offering 0.1 °C / 0.1 °F resolution and internal cold junction compensation. The calibrator alerts users to open outputs, overloads, and short circuits, and shows battery percentage on the LCD. Its compact size (214 × 98.7 × 56 mm, 650 g) and included accessories (thermocouples, alligator clips, leads, batteries) make it ready for field and laboratory work.

Features

  • Dimension: 214 × 98.7 × 56 mm (8.4″ × 3.9″ × 2.2″)

  • Weight: 650 g (batteries included)

  • Operation environment: 0–50 °C, <85% RH

  • Storage environment: –20–60 °C, <75% RH

  • Accessories included: carrying case, user manual, 1.5 V AA ×5, K-type thermocouples (single plug), alligator clips ×2, test leads ×2

  • DC mA source: 0–24 mA, resolution 1 µA, accuracy ±0.025%

  • DC voltage source: 0–24 V, resolution 1 mV, accuracy ±0.05%

  • Frequency source: 1–20,000 Hz, square wave, duty cycle 1–99%

  • DC mA measurement: 0.005–24 mA, resolution 1 µA, accuracy ±0.025%

  • DC voltage measurement: 0–24 V, resolution 0.001 V, accuracy ±0.025%

  • Temperature measurement: 11 thermocouple types, resolution 0.1 °C / 0.1 °F

  • Auto step and ramp for mA and V

  • Detects thermocouple disconnection

  • Short-circuit protection for output

  • Overload and open-output warnings

  • Battery power indication (%)

  • Simultaneous source and measurement functions

Specifications

General Specifications:

Dimension 214.0 (L) x 98.7(W) x 56.0(H) mm

8.4″ (L) x 3.9″ (W) x 2.2″ (H)

Weight 650g / 22.9oz (batteries included)
Operation Environment 0°C ~ 50°C

< 85% RH

Storage Environment -20°C ~ 60°C

< 75% RH

Accessories Carrying case x 1 User manual x 1

1.5V SUM-3 Battery x 5

K-type thermocouples (1M, single plug) x 1 Alligator clips x 2 (black and red)

Test leads x 2 (black and red)

 

Electrical Specifications:

(23+/- 5°C, 10 minutes after turning on the power)

DC mA SOURCE (Max. load 1KΩ, Max. voltage supply 24V)

Range Resolution Accuracy
0~4mA 1μA ± 0.025% ±10μA
4~20mA 1μA ± 0.025% ±5μA
20~24mA 1μA ± 0.025% ±5μA

When output Open, the LCD displays “OL”.

DC V SOURCE (Max. load 24mA, Short circuit protection < 25mA)

Range Resolution Accuracy
0~4V 1mV ± 0.05% ± 10mV
4~20V 1mV ± 0.05% ±5mV
20~24V 1mV ± 0.05% ±5mV

 

Frequency SOURCE (TTL, Square wave, Duty cycle = 1~99%)

Range(Hz) Resolution Accuracy
1.0~1000.0Hz 0.1Hz 0.1Hz
1000~10000Hz 1Hz 1Hz
10000~20000Hz 1Hz 10Hz

DC mA MEASURE

Range Resolution Accuracy
0.005~4mA 1μA ±0.025%±5dgts
4~20mA 1μA ±0.025%±5dgts
20~24mA 1μA ±0.025%±5dgts

If reading of mA (measure) is less than 5 digits, it is displayed as 0.

 

DC V MEASURE

Range Resolution Accuracy
0~24V 0.001V ±0.025%±5dgts

If reading of V (measure) is less than 5 digits, it is displayed as 0.

Temperature of Thermocouples (MEASURE)

(Resolution 0.1C&0.1F, Internal cold junction compensation, Thermocouples accuracy not included, 3 minutes after plugging in thermocouples.)

 

°C °F
Range Accuracy Range Accuracy
K -200 to -150 2.0 -382 to -238 3.6
-150 to 0 1.2 -238 to 32 2.1
0 to 1000 0.8 32 to 1832 1.4
1000 to 1370 1.2 1832 to 2498 2.1
J -200 to -150 2.0 -382 to -238 3.6
-150 to 0 1.0 -238 to 32 1.8
0 to 1050 0.7 32 to 1922 1.2
E -200 to -150 1.5 -382 to -238 2.7
-150 to 0 0.9 -238 to 32 1.6
0 to 850 0.7 32 to 1562 1.2
T -200 to -150 1.5 -382 to -238 2.7
-150 to 0 1.2 -238 to 32 2.1
0 to 400 0.8 32 to 752 1.4
R 0 to 500 1.8 32 to 932 3.2
500 to 1760 1.5 932 to 3200 2.7
S 0 to 500 1.8 32 to 932 3.2
500 to 1760 1.5 932 to 3200 2.7
N -200 to 0 1.5 -328 to 32 2.7
0 to 1300 0.9 32 to 2372 1.6
L -200 to 0 0.9 -328 to 32 1.6
0 to 900 0.7 32 to 1652 1.2
U -200 to 0 1.1 -328 to 32 1.9
0 to 600 0.7 32 to 1112 1.2
B 600 to 800 2.2 1112 to 1472 3.9
800 to 1000 1.8 1472 to 1832 3.2
1000 to 1820 1.4 1832 to 3308 2.5
C 0 to 1800 1.0 32 to 3272 1.8
1800 to 2310 1.5 3272 to 4190 2.7

 

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