Home Products Humidity Calibrator Temperature Humidity Calibration Chamber

DTLH Ultra Low Temperature Intelligent Calibration Chamber

Product Features

Ultra Low temperature calibration chamber, the lowest can reach -46°C, and the humidity range can reach 5%RH-95%RH;

HD touch screen;

Mobile phone/Pad remote control, support USB, RS-232, Wifi, etc., real-time communication with PC;

With multi-segment programming function;

Multi-point calibration, sub-section control, multiple protection alarms;

Temperature and humidity change rate reminder, curve display, timing switch, etc.

Model Selection

DTLH-2RH-8G
DTLH-2RH-15G
DTLH-215BG

DTHTH-85G
DTHTH-95G

DTLH-1RH8G
DTLH-15BG
DTLH-18BG

DTLH-2RH-8G
DTLH-2RH-15G
DTLH-215BG

DTLH-246BG
DTLH-240BG
DTLH-230BG

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Description

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Introduction

DTLH-Series Ultra-low Temperature and Humidity Calibration Chamber is a special verification equipment for detecting hair temperature and humidity meter, dry and wet bulb thermometer, digital temperature and humidity meter and other kinds of temperature and humidity sensors. The equipment can automatically adjust the humidity in the temperature and humidity verification box by accurate measurement of temperature and humidity sensor and industrial programmable controller control. High control and testing accuracy, can provide continuous, repetitive humidity measurement, suitable for scientific research and product testing.

Enforcement of verification regulations

Specification for Calibration of JJF 1076-2020 Digital Temperature and Humidity Meter

Verification Regulation for JJG 205-2005 Mechanical Temperature and Humidity Meter

Calibration Specification for JJF1564-2016 Temperature and Humidity Standard Chamber

Main features of the equipment

Advanced technical principles

Humidity control adopts the principle of moisture occurrence by shunt method, which greatly shortens the time required for stability and improves the verification efficiency compared with the principle of humidity occurrence by the double temperature method.
Temperature control using liquid bath constant temperature plate heating technology, liquid medium heat radiation, temperature more constant, temperature field more uniform.
The unique air circulation design in the measuring chamber ensures no dead angle airflow and adopts frequency conversion technology to speed the fan to ensure that the internal temperature field is uniform at low speed.

Product intelligence

Fusion of measurement technology and Internet of things technology to wifi remote control to make measurement easier.
HD touchscreen control, multi-touch, greatly improve user experience.
One-click start, automatic control, shorten the training period for metering personnel.
Timing switch machine, remote switch machine, save time, improve verification efficiency.

Excellent quality

The shell adopts thick plate phosphating, passivation, spray molding, anti-corrosion, rust prevention, salt spray resistance;
SUS304 for internal bile;
High precision sensor, temperature and humidity control with imported high precision platinum resistance Rotronic humidity sensor.

Upgraded to Automatic Verification System

With an intelligent image acquisition system, dew point meter and industrial control computer, it can be upgraded to an intelligent temperature and humidity meter automatic verification system to realize the automation of the verification process, the automatic preservation of records and the automatic generation of reports. The metering personnel is liberated from the reading recording of the temperature and humidity meter, which greatly improves the verification efficiency and reduces labor costs.

Product Function

1. HD touch screen: high-resolution capacitive screen, clear display, multi-touch support, in line with customer touch operation habits

2. Wifi control: remote setting of temperature and humidity, starting and stopping equipment, reading current temperature and humidity values and fluctuation status of mobile phone/pad

3. Status Tip: Real-time calculation and display of temperature and humidity fluctuation, stable state prompt, U disk insertion detection, wifi connection prompt

4. Curve display: temperature and humidity curve real-time display, support touch zoom translation operation, one-click screenshot save curve to U disk

5. Data record: temperature and humidity data automatically saved to xls format, one key exported to U disk

6. Timing boot: with the timing boot function, can achieve the equipment before work timing boot, immediately after work, with no need to wait.

7. Multi-point calibration: support temperature and humidity sensor multi-point calibration, temperature sensor indication can be segmented multi-point correction to ensure consistency with the standard device.

8. Segmental control: temperature and humidity are controlled by piecewise PID, fast and stable," zero "overshoot, fast and stable humidity from 40 RH to 60 RH only 15 minutes

9. Fan speed regulation: inner cavity main circulation fan, using frequency conversion speed regulation control, through the touch screen, set fan speed;

10. Multiple protection alarms: constant temperature tank overheating protection, liquid level alarm; rehydration tank water shortage warning; compressor overheating alarm, start and stop protection function

11. Communication expansion: with a network interface, wifi interface, USB interface, RS-232 interface, can communicate with the PC, to achieve data reading, system settings.

Technical Parameters

Model	DTLH - 28BG	DTLH - 215BG	DTLH - 220BG	DTLH - 230BG	DTLH - 240BG	DTLH - 246BG
Temp.range	-8 ~ 65℃	-15 ~ 65℃	-20 ~ 65℃	-30 ~ 65℃ -30 ~ 70℃ -30 ~ 80℃	-40 ~ 65℃ -40 ~ 70℃ -40 ~ 80℃	-46 ~ 65℃ -46 ~ 70℃ -46 ~ 80℃
Humidity range	10%RH～98%RH（Customizable：5%RH～98%RH）＠20℃
Temp .stability	≤ ±0.05℃ / 30min ( -15℃～10℃ ) ≤ ±0.05℃ / 30min ( 10℃～30℃ ) ≤ ±0.10℃ / 30min (30℃ ～ 65℃)		≤ ±0.05℃ / 30min		≤ ±0.05℃ / 30min
Temp.uniformity (customizable)	≤ 0.2℃ ( 15℃ ～ 30℃ ) ≤ 0.3℃ ( 5℃ ～ 60℃ )		≤ 0.1℃ ( 10℃ ～ 30℃ ) ≤ 0.15 ~ 0.3℃ ( Other temperatures )		≤ 0.1℃ ( 10℃ ～ 30℃ ) ≤ 0.15 ~ 0.3℃ ( Other temperatures )
Hum.stability	≤ ±0.3%RH / 30min ( 5%RH ～ 80%RH ) ≤ ±0.5%RH / 30min ( 80%RH ～ 95%RH )		≤ ±0.3%RH / 30min ( 5%RH ～ 80%RH ) ≤ ±0.5%RH / 30min ( 80%RH ～ 95%RH )		≤ ±0.3%RH / 30min ( 5%RH ～ 80%RH ) ≤ ±0.5%RH / 30min ( 80%RH ～95%RH )
Hum.uniformity (customizable)	≤ 0.8%RH ( 5%RH ～ 80%RH ) ≤ 1.0%RH ( 80%RH ～ 96%RH )		≤ 0.8%RH		≤ 0.8%RH
Temp.change rate	≤ 0.02℃ / min		≤ 0.02℃ / min (control stabilised state)		≤ 0.02℃ / min (control stabilised state)
Hum. change rate	≤ 0.3%RH / min		≤ 0.3%RH / min (control stabilised state)		≤ 0.3%RH / min (control stabilised state)

Model	DTLH - 28BG	DTLH - 215BG	DTLH - 220BG	DTLH - 230BG	DTLH - 240BG	DTLH - 246BG
Temp. rise speed	15℃ ~ 20℃ / 30min 20℃ ~ 30℃ / 40min -15℃ ~ 15℃ / 50min 20℃ ~ 65℃ / 60min		15℃ ~ 20℃ / 20min 20℃ ~ 30℃ / 30min -30℃ ~ 20℃ / 40min 20℃ ~ 80℃ / 80min		15℃ ~ 20℃ / 20min 20℃ ~ 30℃ / 25min -46℃ ~ 20℃ / 50min 20℃ ~ 80℃ / 80min
Temp. cooling speed	20℃ ~ 15℃ / 35min 30℃ ~ 20℃ / 40min 65℃ ~ 20℃ / 60min		30℃ ~ 10℃ / 40min 50℃ ~ 20℃ / 50min 80℃ ~ 20℃ / 60min		30℃ ~ 10℃ / 40min 50℃ ~ 20℃ / 50min 20℃ ~ -46℃ / 90min
Humidity rise speed ( 20℃ )	20%RH ~ 80%RH / 9min 5%RH ~ 95%RH / 15min 10%RH ~ 95%RH / 12min		20%RH ~ 80%RH / 9min 10%RH ~ 95%RH / 15min		20%RH ~ 80%RH / 9min 10%RH ~ 95%RH / 15min
Humidity reduction speed ( 20℃ )	80%RH ~ 20%RH / 20min 95%RH ~ 10%RH / 25min		80%RH ~ 20%RH / 20min 95%RH ~ 10%RH / 25min		80%RH ~ 20%RH / 20min 95%RH ~ 10%RH / 25min
Workspace dimensions	820×800×510（mm）		620×780×500（mm）		620×780×500（mm）
Overall dimensions	1730 ( height ) × 1045（width)×1300(thickness)		1700×1400×1000（mm）		1820×1682×1172（mm）
weights	450kg		450kg		500kg
Supply power	AC220V ±5% , Max Power 5kW , Rated Power 3kW				AC380V ±5% 50Hz , Max Power 9kW , Rated Power 6kW

Etalon selection table

Name of product	Model No.	Temp range	Resolution	Accuracy
Accurate dew-point instrument	Optidew401	-40~90℃	0.01℃	Temp:±0.1℃；Dew point：±0.15℃
Accurate dew-point instrument	DT-ACG	-40~60℃	0.01℃	±0.2℃(Optional 0.1℃）
Precision digital thermometer	DTSW-LcG	-30~150℃	0.001℃	±0.05℃

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