High Precision Digital Temperature Thermometer Industrial
Temperature Calibrator
The PR720 series industrial digital thermometer can be connected to
a variety of thermocouple or resistance thermometer sensors, and
the sensor data can be corrected on the thermometer without the use
of other peripherals. They are suitable for industrial or
laboratory test environments where sensors need to be replaced
frequently and the requirements for test results are high.
1. Special PRT sensor with correction values
The PR720 series thermometer is connected to the sensor in a
single-wire communication mode. The correction value is
automatically loaded without any additional settings when the
thermometer is powered on. For the relatively short life of
the thermocouple sensor, we offer an intermediate connector
(PR7201) with a reference junction compensation function. When the
sensor needs to be replaced, the user can set the correction value
of the new sensor and save it to the intermediate connector
(PR7201).
2. Various temperature sensors are supported
In order to meet different application requirements, PR720 series
thermometer support many types of thermocouples and PRTs, including
S, N, K, T, PT100, PT200 and PT1000. All PRTs are aged and
calibrated before being delivered to the customer.
3. Wireless communication function
The PR720A has a wireless communication function, which uses
multiple PR720A and combined with the PC software to perform
wireless temperature uniformity testing, which is more flexible and
convenient than the traditional application notes.
4. Low power, portable design
The PR720 series is much smaller than a general secondary
instrument and is ideal for factory use. With a low-power design,
the PR720 can operate for 1400 hours with three AAA batteries.
5. Zero-point mark function
This function marks the current temperature as zero, and then the
obtained temperature value is the temperature value relative to
this point.
6. Over temperature reminder function
The screen flashes when the PR720’s temperature exceeds the limit.
| Operating temperature | -5℃～45℃ |
| Working Humidity | 0～80%,Non condensing |
| Battery type | 3 AAA alkaline batteries |
| Electronics dimensions (H x W x D) | 104*46*30mm |
| Weight (including battery) | 120g |
| Calibration period | 2 years |
| Preheating time | Preheat one minute |
| Communication | 2.4G wireless(PR720A) ; RS232(PR720B) |
| Connector life | ≥5000 insertions |
| Time of duration | Turn off wireless communications and backlight≥1400 hours Turn on wireless communications and auto send ≥700 hours |
- Temperature sensor selection table
| No. | Model | Temp. Range (℃) | Probe Size (mm) | Length of wire | Sensor type | Initial indication error≤℃ |
| 1 | ADPG1400403 | -40~200 | Φ4*40 | 3.0 m | A class PT1000 | 0.1+0.02%RD |
| 2 | ADPF1104001 | -40~200 | Φ1.5*400 | 1.0 m | 0.1+0.02%RD |
| 3 | ADPG2400403 | -60~300 | Φ4*40 | 3.0 m | 0.1+0.02%RD |
| 4 | ADPF2504001 | -60~300 | Φ5*400 | 1.0 m | 0.1+0.02%RD |
| 5 | ADPG0605001 | -200~300 | Φ6*500 | 1.5 m | A class PT100 | 0.15+0.05%RD |
| 6 | ADPG3500503 | RT~500 | Φ5*50 | 3.0 m | A class PT1000 | 0.1+0.025%RD |
| 7 | ADPF3505001 | RT~500 | Φ5*500 | 1.5 m | 0.1+0.025%RD |
| 8 | APPG5605001 | RT~800 | Φ6*500 | 1.5 m | 0.2+0.07%RD |
| 9 | NNPK6120200 | RT~1050 | Φ1.5*2000 | / | Type N thermocouple | 0.3+0.1%RD |
| 10 | NNPK6150200 | RT~1050 | Φ1.5*5000 | / | 0.3+0.1%RD |
| 11 | NNPK6220200 | RT~1050 | Φ2*2000 | / | 0.3+0.1%RD |
| 12 | NNPK6250200 | RT~1050 | Φ2*5000 | / | 0.3+0.1%RD |
| 13 | NNPK8220200 | RT~1250 | Φ2*2000 | / | 0.3+0.1%RD |
| 14 | NNPK8250200 | RT~1250 | Φ2*5000 | / | 0.3+0.1%RD |
