220-HMK15 Humidity Calibrator
220-HMK41 Calibration Kit
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| 220-HMK15 Humidity Calibrator | 220-HMK41 Calibration Kit |
The 220-HMK15 Humidity Calibrator makes calibration and spot checking of humidity probes and transmitters easy and reliable. The operating principle is based on the fact that a saturated salt solution generates a certain relative humidity in the air above it. The reading of the humidity probe can then be adjusted accordingly. This is a generally accepted and reliable method for calibrating humidity instruments. The structure of the HMK15 is designed to ensure fast and stable temperature equilibration. No external power is required. In addition to laboratory use, it is also suitable for on-site checks. Special transit covers make the HMK15 simple to transport. The HMK15 includes a thermometer for measuring the temperature during calibration. It can also be used for checking the temperature measurement accuracy of the transmitter. The accuracy of the thermometer is ± 0 54°F (± 0.3°C).
The 220-HMK41 Calibration Kit includes HMI41, HMP46, NIST traceable certificate of calibration, and carrying case. The HMI41 hand held indicator has an easy-to-read LCD display. Temperature readout is available in either degrees Centigrade or Fahrenheit. In addition to displaying humidity and temperature readings, the HMI41 can calculate dewpoint and wet bulb temperature, absolute humidity and mixing ratio. Calculated variables are available in metric and non-metric. The HMP46 humidity and temperature probe is solid and rugged; its stainless steel probe head is made to withstand rough handling in mechanically demanding applications. These features, plus fast response time, high measurement accuracy and excellent stability, as well as the wide temperature range of the probe, make the HMI41/HMK46 combination an ideal choice for the most demanding applications.
Specifications
220-HMK15
The standard HMK15 consists of the following parts:
Two salt chambers, chamber covers, and transit covers
Base plate
Calibrated thermometer
Measurement cup and mixing spoon
Each salt chamber has holes with a diameter of 12, 13.5, and 18.5 mm. There are two holes with a diameter of 13.5 mm.
220-HMK41
Humidity
Range: 0-100%
Accuracy: ± 2% 0-90% RH, ± 3% 90-100% RH
Temperature
Range: -40/+212°F (-40/+100°C)
General
Typical ranges of calculated variables:
Dewpoint temp: -40/+122°F (-40/+100°C)
Absolute humidity: 0/262 gr/ft³ (0/600 g/m³)
Wet bulb temperature: 32/212°F (0-100°C)
Mixing ratio: 0/4200 gr/lb d.a. (0/600 g/kg d.a.)
Cable length: 1500 mm, extended spiral cable
Operating temperature range: -4/+140°F (-20/+60°C)
Electronics housing: ABS plastic, NEMA-4 (IP 65)
Probe head: stainless steel
Sensor protection: sintered filter
Weight: 450 g
Ordering Information
220-HMK15 Humidity Calibrator
220-19766HM Extra Salt Chamber
220-HM27032 Carrying Bag
220-5135 Lithium Chloride (11%) 100 grams
220-5136 Potassium Sulfate (97%) 100 grams
220-5137 Sodium Chloride (75%) 100 grams
220-HMK41 Humidity Calibration Kit
220-19446 Serial Communication Cable
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Temperature & Humidity Sensors
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