Atec HM70 User Manual

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HM70 Hand-Held Humidity and Temperature Meter for Spot-Checking Applications

The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 is a highperformance, portable humidity reference that is exciting to use.

Features/Benefits

Multilingual user interface

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Shows measurement trends

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graphically

Proven Vaisala HUMICAP®

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Sensor technology

3 probe alternatives,

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temperature measurement ranges between -70 and +180 °C

Multiprobe operation; dew

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point and CO be connected

2 probes can be connected

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simultaneously

Displays various humidity

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parameters

Sensor preheat and chemical

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purge options for demanding conditions

NIST traceable (certificate

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included)

probes can also

The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM70 is designed for demanding humidity measurements in spotchecking applications. It is also ideal for field checking and calibration of Vaisala's fixed humidity instruments.

The HM70 incorporates the latest generation of the Vaisala HUMICAP Sensor. It is reliable and has better than ever long-term stability. Additionally, it has a sensor that copes well with chemical interference and provides accuracy that lasts in demanding conditions.

The chemical purge option maintains measurement accuracy in environments with high concentrations of chemicals. The sensor preheat option reduces measurement delays as it keeps the sensor dry when the probe is inserted into hot and humid processes.

Three Probes to Choose from

The HMP75 is a general purpose probe whereas the HMP76 is a long, stainless steel probe especially suitable for spot-checking in ducts. The HMP77 is a small probe at the end of a 5-meter cable. The probe is ideal for difficult-to-reach areas and for on-site calibration of Vaisala's process transmitters.

In addition, the HM70 supports the use of Vaisala's dew point, carbon dioxide and moisture in oil probes, allowing measurements in several multiparameter applications.

MI70 Link

The optional MI70 Link Windows® software and the USB connection cable form a practical tool for transferring logged data and real time measurement data from the HM70 to a PC.

Technical Data

HMP75, HMP76 and HMP77 Probes Measured Variables

RELATIVE HUMIDITY

Measurement range 0 ... 100 %RH Accuracy (including nonlinearity, hysteresis and repeatability)

at +15 ... +25 °C (+59 ... +77 °F) ±1 %RH (0 ... 90 %RH)

±1.7 %RH (90 ... 100 %RH) at -20 ... +40 °C (-4 ... +104 °F) ±(1.0 + 0.008 x reading) %RH at -40 ... +180 °C (-40 ... +356 °F) ±(1.5 + 0.015 x reading) %RH

Factory calibration ±0.6 %RH (0 ... 40 %RH) uncertainty (+20 °C / +68 °F) ±1.0 %RH (40 ... 97 %RH)

(Defined as ±2 standard deviation limits.)

Response time (90%) at +20 °C (+68 °F) in still air

HMP75 (with standard plastic grid) 17 s HMP76 (with standard sintered bronze filter) 60 s HMP77 (with standard plastic grid and stainless

50 s

steel netting)

Sensor HUMICAP

HUMICAP

180RC (chemical purge, sensor preheat)

180R

Typical long-term stability better than 1 %RH / year

TEMPERATURE

Measurement range

HMP75 -20 ... +60 °C (-4 ... +140 °F) HMP76 -50 ... +120 °C (-58 ... +248 F)

short time -50 ... +180 °C (-58 ... +356 °F)

HMP77 -70 ... +180 °C (-94 ... +356 °F)

Accuracy at +20 °C (+68 °F) ±0.2 °C (±0.36 °F) Accuracy over temperature range (see graph)

°C

0.7

0.6

0.5

0.4

0.3

0.2

0.1

-0.1

-0.2

-0.3

-0.4

-0.5

-0.6

-0.7 0-80 -60 -40 -20 20 40 60 80 100 120 140 160

°C

180

Temperature sensor Pt100 RTD Class F0.1 IEC 60751

Probe General

Operating temperature range for electronics -40 ... +60 °C

(-40 ... +140 °F) Housing classification IP65 (NEMA 4) Housing material ABS/PC blend Probe material Stainless steel (AISI316L) Cable length between probe and indicator 1.9 m

MI70 Measurement Indicator Indicator General

Menu languages English, Chinese, French, Spanish, German,

Russian, Japanese, Swedish, Finnish

Display LCD with backlight, graphic trend display of

any parameter, character height up to 16 mm Max. no. of probes 2 Power supply Rechargeable NiMH battery pack with AC-

adapter or 4xAA-size alkalines, type IEC LR6 0 Analog output 0... 1 VDC Output resolution 0.6 mV PC interface MI70 Link software with USB or

serial port cable Data logging capacity 2700 points Alarm audible alarm function Operating temperature range -10 ... +40 °C (+14 ... +104 °F) Operating humidity range non-condensing Housing classification IP54 Battery operation time

Continuous use 48 h typical at +20 °C (+68 F) Data logging use up to a month, depending on logging

interval Electromagnetic compatibility

Complies with EMC standard

EN61326-1, Portable Equipment

MI70 Indicator + Probe = HM70

ACCESSORIES

Carrying cases

for MI70 and HMP75/77 probe MI70CASE for MI70 and HMP75/76 probe MI70CASE2

Transmitter connection cables for

HMT330 & HMT120/130 211339 HMT310 DRW216050 HMW90 Series 219980

HMD/W60/70 Series HMA6070 MI70 Link software with USB cable 219687 MI70 Link software with serial port cable MI70LINK Analog output cable 27168ZZ

Sensor protection HMP75

Plastic PC grid (HMP75 standard) 6221

Membrane filter 10159HM

Sintered bronze filter DRW212987SP HMP76/77

Plastic PPS grid DRW010276SP

Sintered stainless steel filter

Sintered bronze filter (HMP76 standard) DRW212987SP

PPS grid with SS netting (HMP77 standard) DRW010281SP

HM47280SP

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