MMT162 VAISALA | Alldatasheet

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Technical content

Features

  • Continuous measurement of moisture in oil
  • Measures in lubrication, hydraulic, and transformer oils
  • Excellent pressure and temperature tolerance
  • Proven Vaisala HUMICAP â sensor: over 20 years in oil applications
  • Measures water activity - ppm calculation available for transformer oil
  • Digital output RS-485 with Modbus
  • Traceable calibration (certificate included) Vaisala HUMICAPâ Moisture and Temperature Transmitter for Oil MMT162 is an excellent economical solution for reliable on-line detection of moisture in oil. Benefits
  • Reliable
  • Durable
  • Small size, easy to integrate Reliable Vaisala HUMICAPâ technology MMT162 incorporates the latest generation of the Vaisala HUMICAPâ sensor. The sensor is developed for demanding moisture measurement in liquid hydrocarbons and has been successfully used in oil applications for over two decades. The sensor’s excellent chemical tolerance provides accurate and reliable measurement over the measurement range. Water activity measurement MMT162 measures moisture in oil in terms of the water activity (aw) and temperature (T). Water activity indicates directly whether there is a risk of free water formation. The measurement is independent of oil type, age, and temperature. The ppm calculation for mineral oil based transformer oil is optional in MMT162. Several outputs - one connector MMT162 has two analog outputs that can be scaled and the measurement ranges changed. Additionally, the transmitter has an RS-485 serial output. The signals and the unit power travel in the same cable. An optional LED cable enables a visual alarm. Compact, rugged, and intelligent Due to its compact size, MMT162 is quickly and easily installed in tight spaces. Units are delivered fully assembled - however, you can reconfigure them to suit your needs. MM70 moisture and temperature meter In combination with an MM70 Handheld Moisture and Temperature Meter, the MMT162 provides an ideal tool for on-site calibration. MI70 Handheld Measurement Indicator (included in the MM70 package) can be used as a communication and datalogging device and display for the MMT162.

Measurement range 0–1 aw Accuracy (including non-linearity, hysteresis, and repeatability): 0–0.9 aw .9–1.0 aw ± 0.02 aw ± 0 .03 aw Response time in oil flo w (typical) < 1 min (dry-wet) Temperature Accuracy at +20 °C (+68 °F) ± 0.2 °C (0.36 °F) Moisture Calculated moisture content in ppm for mineral transformer oil Operating environment Operating temperature −40 … +60 °C (−40 … +140 °F) Storage temperature −40 … +80 °C (−40 … +176 °F) Oil temperature −40 … +80 °C (−40 … +176 °F) Oil flo w Some flo w recommended Pressure range Up to 200 bar Inputs and outputs Alarm level indication by analog signal User selectable Digital outputs RS-485, non-isolated, Vaisala pr otocol, Modbus RTU protocol Analog current output 0–20 mA, 4–20 mA Analog voltage output 0–5 V, 0–10 V Compliance EU directives and regulations EMC Directive (2014/30/EU) RoHS Directive (2011/65/EU) amended by 2015/863 Electromagnetic compatibility (EMC) IEC/EN 61326‑ 1, industrial environment 1) Compliance marks CE, China RoHS, RCM, UKCA 1) Temperature output may deviate in industrial environments of 80–700 MHz. Mechanical specifications Sensor HUMICAPâ Cable connections (2 ports) M8 4-pin male Mechanical connections with bonded seal ring ( washer) G 1/2" ISO or NPT 1/2’’ Weight 200 g (7 oz) Minimum operating voltage with RS-485 output 14–28 V DC Voltage output 16–28 V DC Current output 22–28 V DC Supply current Normal measurement 20 mA + load current External load for Voltage output Min. 10 kΩ Current output Max. 500 Ω Housing Probe body material Stainless steel (AISI 316L) IP rating IP66 Spare parts and accessories Stainless steel filt er (standard) 225356SP Stainless steel filt er for high flow (> 1 m/s) 221494SP Connection cable for MM70 handheld me ter 219980 USB serial interface cable 219690 Sealing ring set (U-seal) ISO G1/2, 3 pcs 221525SP Sealing ring set (copper) ISO G1/2, 3 pcs 221524SP ISO 1/2" plug 218773 NPT 1/2" plug 222507 Sampling cell DMT242SC Sampling cell with S wagelok connectors DMT242SC2 Connection cables 0.32 m (1 ft) shielded, M8 threaded HMP50Z032 3.0 m (9.8 ft), shielded, M8 threaded HMP50Z300SP 5.0 m (16.4 ft), shielded, M8 threaded HMP50Z500SP 10 m (32.8 ft), shielded, M8 threaded HMP50Z1000SP 3 m, shielded, connector 90° angle 231520SP 5 m, shielded, connector 90° angle 231521SP M8 threaded, Ch1 signal + Ch2 LED MP300LEDCBL 76 (3) 127.5 (5.02) 30.5 (1.2) 1/2" NPT 119.5 (4.7) Ø12 (0.47) 76 (3) 30.5 (1.2) G1/2" ISO 228-1 Ø 33 (1.3) AW 30 (1.18) Ø12 (0.47) 43.5 (1.7) 51.5 (2.02) mm [in] MMT162 dimensions Published by Vaisala | B210755EN-L © Vaisala 2023 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice. www.vaisala.com