Temperature/Humidity Logger

Temperature/Humidity Logger

• Measure temperature and humidity with one instrument
  
• Accepts two type J, K,or T thermocouple probes
  
• Standby mode conserves batteries while logging data
  
• Optional software for bidirectional RS-232 communications
  
• Stores 850 pairs of measurements
  

Use the benchtop Temperature/Humidity Logger almost anywhere temperature and humidity needs to be monitored - laboratories, museums, art galleries, warehouses, protected outdoor environments, and more! The logger operates in three modes: two-channel temperature, humidity/temperature, and dew point/temperature.

This compact, portable Temperature/Humidity Logger is packed with features. Nonvolatile memory stores setup conditions (interval time or total logging time), thermocouple probe type, logged/stored parameters, and peak/valley values for each mode. Serial input/output allows for printer and computer compatibility, Optional data analysis software and serial printer available.

Measure and display either differential (DT) temperature or dual temperature simultaneously in the two-channel temperature mode. The temperature / humidity logger accepts one or two type J, K, or T thermocouple probes with ANSI miniconnectors. Features in this mode include autocalibration of probe, selectable °F or °C scale, selectable 0.1%/1° resolution up to 999.9° (1° above 999.9°), dual analog temperature output, and accuracy of ±0.1% of reading.

Measure and display both relative humidity and temperature (RTD) in the humidity/temperature mode. Use one of two interchangeable relative humidity/temperature probes. Wide-range probe 637-0050 has a compensated RH range from 0 to 100%. General-purpose probe 637-0052 has a compensated RH range from 5.0 to 95.0%. Other features in this mode include: automatic field calibration, a humidity resolution of 0.1% and 1% and analog humidity/RTD outputs.

In the dew point/temperature mode, temperature / humidity logger calculates the dew point from the relative humidity and temperature data, and displays it and the temperature (RTD) on the LCD. A dew point range of -94° to 158°F (-70° to 70°C) is available with wide-range humidity probe 637-0050, a dew point range of -58° to 122°F (-50° to 50°C) is available with general-purpose humidity probe 637-0052.

The Temperature/Humidity Logger is housed in a molded ABS plastic housing and has a membrane keypad. Dual LCD shows scale and mode selected. Two AA batteries (included) provide 50 hours of continuous operation in standby mode. Purchase optional battery pack for up to 300 hours of continuous use. (We recommend using the optional AC wall mount power supply 691-9050 where line power is available). Order the L-shaped mounting bracket to attach either RH probe to the logger. See below to order software, logger kits, probes, and accessories.

Temperature/Humidity Logger Specifications:

WITH THERMOCOUPLE PROBES: Temperature ranges:   J: -310 to 1832°F (-190 to 1000°C)   K: -418 to 2507°F (-250 to 1375°C)   T: -418 to 752°F (-250 to 400°C) Temperature resolution: 0.1/1° F or °C (switchable); autoranging to 1° above 999.9°. Temperature accuracy: ±0.1% of reading or ±0.7°F (±0.4°C) above -238°F (-150°C) ±2°F (±1°C) below -238°F (-150°C) Differential (DT) accuracy: ±0.5°F (±0.3°C) Probes: one or two type J, K, or T thermocouple probes (sold separately)

WITH RELATIVE HUMIDITY/TEMPERATURE PROBE: RH ranges: 637-0050 0.0 to 100.0% RH within -22 to 158°F (-30 to 70°C) temperature range 637-0052 5.0 to 95.0% RH within 32 to 122°F (0 to 50°C) temperature range RH resolution: 0.1% / 1% (selectable) RH accuracy: 637-0050 ±2% RH from 10.0 to 96.0% RH; ±3% outside these limits 637-0052 ±RH from 10.0 to 90.0% RH; ±3% outside these limits Temperature range: -32 to 212°F (0 to 100°C) Temperature accuracy: ±2.7°F (±1.5°C)

GENERAL SPECIFICATIONS: Display: dual LCD - one 4-digit, 3/8"H and one 5-character alphanumeric, 3/16"H Output: 0.0 to 1.0V analog output of temperature and humidity; bidirectional RS-232-C Memory: Stores 850 pairs of readings for recall Power: two AA batteries (included), optional battery pack, or optional AC adapter Battery life: up to 50 hours of continuous operation in standby mode (with AA batteries) or up to 300 hours (with optional battery pack) Low battery indication: yes Dimensions: 6 1/2"Wx3 1/2"Hx7 3/4"D Shipping weight: 3 lbs (1.4 kg)

ORDERING INFORMATION 691-9000 Barnant Temperature/Humidity Logger

Temperature/Humidity Logger Kit Keep your logger and accessories together with this handy kit. Unit includes temperature/humidity logger, one general-purpose relative humidity/temperature probe (637-0052), one L-shaped humidity probe mounting bracket, one 10-ft humidity probe extension cable (637-0055), two type K thermocouples (8516-82), pack of four AA batteries, 115 VAC wall mount power supply, instruction manual, data analysis software, and deluxe carrying case (19"W x 14 1/4"H x 5 1/4"D) 691-9020 Temperature/Humidity Logger kit; 115 VAC, 50/60 Hz. Shpg wt. 7 lbs (3.5 kg)

Probes (measure 12 mm dia with 5"L handle)

Cat no.	Description	Shpg wt.
637-0050	Wide-range RH/temp, 12"L	1 lb (0.5 kg)
637-0052	General-purpose RH/temp, 3 3/4"L	1 lb (0.5 kg)

Cables (for sending data to a printer or computer)

Cat no.	Description	Shpg wt.
692-8050	Cable to DB25M serial printer, 6 ft	1 lb (0.5 kg)
692-8052	Cable to DB9F serial computer port, 6 ft	1 lb (0.5 kg)
692-8054	Cable to DB25F serial computer port, 6 ft	1 lb (0.5 kg)

Accessories

Cat no.	Description	Shpg wt.
691-9060	L-shaped wall/meter probe mount bracket	1 lb (0.5 kg)
691-9080	10-ft humidity probe extension cable	1 lb (0.5 kg)
3335-00	Humidity meter calibration kit*	5 lbs (2.5 kg)

Data Analysis Software Analyze and display Temperature and Humidity data on your WINDOWS® 95/98/NT4. You can use data from previously stored file or from the temperature/humidity logger. Calculate and display additional data such as absolute humidity, water vapor weight and pressure, humidity ratios, specific volume and enthalpy. Create charts and graphs, download and store real-time temperature and humidity data, and configure and check logger setup. Software on CD-ROM with online documentation.