Hanna Instruments HI 8666 Instruction Manual
Hanna Instruments HI 8666 Instruction Manual

Hanna Instruments HI 8666 Instruction Manual

Rh/c transmitter
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Instruction Manual
HI 8666
RH/°C Transmitter
This Instrument is in Compliance with the CE Directives
w w w . h a n n a i n s t . c o m

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Summary of Contents for Hanna Instruments HI 8666

  • Page 1 Instruction Manual HI 8666 RH/°C Transmitter This Instrument is in Compliance with the CE Directives w w w . h a n n a i n s t . c o m...
  • Page 2: Table Of Contents

    Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the neces- sary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications.
  • Page 3: Preliminary Examination

    Dealer in their original packing. GENERAL DESCRIPTION HI 8666 is a 2-wire, 4 to 20 mA relative humidity and temperature transmitter. The instrument transmits electrically isolated out- puts that are linear and proportional to RH% and °C.
  • Page 4: Functional Description

    FUNCTIONAL DESCRIPTION 1) Sintered Cap 2) Relative Humidity and Temperature Sen- sors 3) 11-Pin Connector...
  • Page 5: Specifications

    SPECIFICATIONS Range 0 (4 mA) to 100% (20 mA) °C -20 (4 mA) to 60°C (20 mA) Resolution ±0.125% RH, ±0.02 mA °C ±0.1°C, ±0.02 mA Accuracy ±2% RH (5 to 80% RH) ±4% RH (80 to 90% RH, 0 to 40°C) °C ±1% of span Typical EMC RH...
  • Page 6: Terminal Board And Installation

    TERMINAL BOARD AND INSTALLATION The HI 8666 Transmitter has an 11-pin con- nector at the rear of the instrument. Connect it to a UNDECAL relay socket. The terminals are: 1 +°C: Positive Terminal; 9 -°C: Negative Terminal; 4 +RH: Positive Terminal;...
  • Page 7 2. Passive and not isolated receivers (Common positive) °C • Receiver Receiver • • • • • Power °C Supply Transmitter Transmitter • • • 3. Passive and not isolated receivers (Common negative) • °C Receiver Receiver • • • •...
  • Page 8 4. Active receivers (both isolated or not) • • Transmitter Receiver • • • • °C °C Receiver Transmitter • •...
  • Page 9: Calibration Checking Procedure

    For an accurate annual recalibration, con- tact your nearest Hanna Service Center. You can also check the status of your HI 8666 by using the Hanna mini-calibration cham- bers HI 7102. The kit includes two thermally...
  • Page 10 • When the salt has dis- solved completely, add all the content of the second bottle of HI 7111. • Allow the solution obtained to cool, and then pour it into the chamber marked "RH 11.1%", making sure that no residue remains on Na Cl the walls of the glass con- Li Cl...
  • Page 11 0.0% RH. All RH to mA conversions can be made with the tables provided (see page 12). • Remove the HI 8666 from the chamber and tightly seal the chamber containing the LiCl solution. • Remove the cap from the "RH 75.4%"...
  • Page 12 • Wait for the measurement to stabilize (approximately 4 hours) • Insert the probe in the "RH 75.4%" cham- ber, the multimeter reading should be 16.06 mA: this represents the theoretical chamber value of 75.4% RH. • The relative humidity calibration check- ing procedure is complete.
  • Page 13 Connect the unit to a 12 to 24VDC power supply and hook up a multimeter (range of 20mA) in series with the circuit. • Place the HI 8666 into a stable tempera- ture environment of 25°C, preferably a temperature chamber, and wait for the temperature to stabilize.
  • Page 14: Tables For Rh Checking

    TABLES FOR RH CHECKING Curr. Rh. Curr. Curr. Curr. Curr. .0000 4.000 .1000 4.016 .2000 4.032 .3000 4.048 .4000 4.064 .5000 4.080 .6000 4.096 .7000 4.112 .8000 4.128 .9000 4.144 1.000 4.160 1.100 4.176 1.200 4.192 1.300 4.208 1.400 4.224 1.500 4.240 1.600 4.256 1.700 4.272 1.800 4.288 1.900 4.304 2.000 4.320 2.100 4.336 2.200 4.352 2.300 4.368 2.400 4.384 2.500 4.400 2.600 4.416 2.700 4.432 2.800 4.448 2.900 4.464...
  • Page 15 Curr. Curr. Rh. Curr. Curr. Curr. 30.00 8.800 30.10 8.816 30.20 8.832 30.30 8.848 30.40 8.864 30.50 8.880 30.60 8.896 30.70 8.912 30.80 8.928 30.90 8.944 31.00 8.960 31.10 8.976 31.20 8.992 31.30 9.008 31.40 9.024 31.50 9.040 31.60 9.056 31.70 9.072 31.80 9.088 31.90 9.104 32.00 9.120 32.10 9.136 32.20 9.152 32.30 9.168 32.40 9.184 32.50 9.200 32.60 9.216 32.70 9.232 32.80 9.248 32.90 9.264 33.00 9.280 33.10 9.296 33.20 9.312 33.30 9.328 33.40 9.344...
  • Page 16 Rh. Curr. Curr. Curr. Curr. Curr. 60.00 13.60 60.10 13.61 60.20 13.63 60.30 13.64 60.40 13.66 60.50 13.68 60.60 13.69 60.70 13.71 60.80 13.72 60.90 13.74 61.00 13.76 61.10 13.77 61.20 13.79 61.30 13.80 61.40 13.82 61.50 13.84 61.60 13.85 61.70 13.87 61.80 13.88 61.90 13.90 62.00 13.92 62.10 13.93 62.20 13.95 62.30 13.96 62.40 13.98...
  • Page 17 Rh. Curr. Curr. Curr. Curr. Curr. 90.00 18.40 90.10 18.41 90.20 18.43 90.30 18.44 90.40 18.46 90.50 18.48 90.60 18.49 90.70 18.51 90.80 18.52 90.90 18.54 91.00 18.56 91.10 18.57 91.20 18.59 91.30 18.60 91.40 18.62 91.50 18.64 91.60 18.65 91.70 18.67 91.80 18.68 91.90 18.70 92.00 18.72 92.10 18.73 92.20 18.75 92.30 18.76 92.40 18.78...
  • Page 18: Tables For Temperature Checking

    TABLES FOR TEMPERATURE CHECKING Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. -20.0 4.000 -19.9 4.020 -19.8 4.040 -19.7 4.060 -19.6 4.080 -19.5 4.100 -19.4 4.120 -19.3 4.140 -19.2 4.160 -19.1 4.180 -19.0 4.200 -18.9 4.220 -19.8 4.240 -18.7 4.260 -18.6 4.280 -18.5 4.300 -18.4 4.320 -18.3 4.340 -18.2 4.360 -18.1 4.380 -18.0 4.400 -17.9 4.420 -17.8 4.440 -17.7 4.460 -17.6 4.480 -17.5 4.500 -17.4 4.520 -17.3 4.540 -17.2 4.560 -17.1 4.580...
  • Page 19 Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. 10.00 10.00 10.10 10.02 10.20 10.04 10.30 10.06 10.40 10.08 10.50 10.10 10.60 10.12 10.70 10.14 10.80 10.16 10.90 10.18 11.00 10.20 11.10 10.22 11.20 10.24 11.30 10.26 11.40 10.28 11.50 10.30 11.60 10.32 11.70 10.34 11.80 10.36 11.90 10.38 12.00 10.40 12.10 10.42 12.20 10.44 12.30 10.46 12.40 10.48 12.50 10.50 12.60 10.52 12.70 10.54 12.80 10.56 12.90 10.58...
  • Page 20 Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. Temp. Curr. 40.00 16.00 40.10 16.02 40.20 16.04 40.30 16.06 40.40 16.08 40.50 16.10 40.60 16.12 40.70 16.14 40.80 16.16 40.90 16.18 41.00 16.20 41.10 16.22 41.20 16.24 41.30 16.26 41.40 16.28 41.50 16.30 41.60 16.32 41.70 16.34 41.80 16.36 41.90 16.38 42.00 16.40 42.10 16.42 42.20 16.44 42.30 16.46 42.40 16.48 42.50 16.50 42.60 16.52 42.70 16.54 42.80 16.56 42.90 16.58...
  • Page 21: Accessories

    ACCESSORIES HI 7102 Mini-calibration RH chamber, complete with O-ring and pre- calibrated saturated salts (LiCl and NaCl) HI 7111/P Spare saturation salts 6 x 15 g bottles of LiCl for low range humidity calibration HI 7121/P Spare saturation salts 6 x 33 g bottles of NaCl for high humidity calibration HI 7164...
  • Page 22: Warranty

    WARRANTY HI8666 is warranted for one year against defects in workmanship and materials when used for its intended purpose and main- tained according to instructions. This warranty is limited to repair or replace- ment free of charge. Damages due to accidents, misuse, tamper- ing or lack of prescribed maintenance are not covered.
  • Page 23: Ce Declaration Of Conformity

    Hanna Instruments Srl V.le delle industrie 12 35010 Ronchi di Villafranca (PD) ITALY herewith certify that the RH/°C transmitter HI 8666 has been tested and found to be in compliance with the following regulations: IEC 801-2 Electrostatic Discharge IEC 801-3...
  • Page 24 PRINTED IN MAN8666R1 ITALY 03/96...

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