Product description – Vaisala HMD70 User Manual
Page 5
HMD70U/Y Transmitters
U303en-1.1
Operating Manual
1997-07-31
1
1.
PRODUCT DESCRIPTION
The HMD70 transmitters are duct mounted three-wire transmitters for the
measurement of humidity (HMD70U) and for the measurement of humidity
and temperature (HMD70Y).
The HMD70U/Y transmitters are easy to install and maintain: the electronics
can be disconnected without dismantling the installation. One point calibration
is easily performed with the HMI41 indicator and the calibration cable
19116ZZ.
Both transmitter types incorporate the HUMICAP
®
180 humidity sensor which
uses an operating principle based on changes in the capacitance of a thin
polymer film as it absorbs water molecules. The HMD70Y transmitters
measure temperature with the reliable Pt 1000 sensor.
See also other documents in the category Vaisala Humidifiers:
- Calibration of Digital Transmitters with HMI41 (36 pages)
- Calibration of Series HMDW2030 and HMP130 Transmitter with HMI41 (14 pages)
- Calibration of Series HMDW6070 and HMP140 Transmitter with HMI41 (30 pages)
- HM34 (30 pages)
- HM40 (47 pages)
- HM44 (52 pages)
- HM70 (83 pages)
- HMD40 (1 page)
- HMD60 (4 pages)
- HMDW110 (62 pages)
- HMDW80 (51 pages)
- HMI41 (74 pages)
- HMP41 (72 pages)
- HMK15 (39 pages)
- HMM100 (71 pages)
- HMM105 (23 pages)
- HMM211 (42 pages)
- HMM212 (36 pages)
- HMM213 (52 pages)
- HMP140 (28 pages)
- HMP155 (84 pages)
- HMP228 (115 pages)
- HMP230 (163 pages)
- HMP240 (130 pages)
- HMP260 (118 pages)
- HMP60 (71 pages)
- HMT100 (52 pages)
- HMT120 (87 pages)
- HMT130 (95 pages)
- HMT140 (76 pages)
- HMT310 (88 pages)
- HMT310 (105 pages)
- HMT330 (209 pages)
- HMT360 (97 pages)
- HMT360 (63 pages)
- HMT360N (110 pages)
- HMW40 (1 page)
- HMW90 (110 pages)
- SHM40 (68 pages)
- RDP100 (14 pages)