Prostat PHT-770 User manual

P R O F E S S I O N A L
S T A T I C
C O N T R O L
P R O D U C T S
Operations Manual
Hygro-Thermometer
PHT-770

Copyright 2001-2013 by PROSTATCorporation. All rights reserved. Printed in the United States of
America. No part of this manual may be used or reproduced in any manner whatsoever without written
permission. For information contact PROSTAT Corporation, 1072 Tower Lane, Bensenville, IL 60106
PROSTAT is the registered trademark of PROSTATCorporation

PHT-770 Hygro-Thermometer
2
TABLE OF CONTENTS
PROSTAT®PHT-770 HYGRO-THERMOMETER
Title Page #
I. General Operation.......................................................................................................... 3
II. Min/Max Function............................................................................................................ 3
III. Data Hold Function ......................................................................................................... 4
IV. Auto Power Off Feature .................................................................................................. 4
V. Lo Battery Indicator......................................................................................................... 4
General Specifications.................................................................................................... 5

PHT-770 Hygro-Thermometer
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I. General Operation
A. Remove Protective Sensor cover from unit.
B. Turn the PHT-770 on by pressing the ON/OFF Button.
1. Press and hold the ON/OFF Button approximately
one second. Unit will warm up in approximately 10
seconds. The unit is ready to function when the
humidity and temperature is indicated, allow 60 - 80
seconds for the unit to take a reading.
2. Do not press hard.
C. Press the C/F key to convert the reading to the desired
Centigrade/Fahrenheit scale.
1. Both temperature and relative humidity will display
simultaneously.
D. Condensation will not affect the meters accuracy.
E. Replace protective sensor cover when unit is not in use or
for storing unit.
II. Min/Max Function
A. Press and hold the MN/MX button until MIN appears on the
display next to the relative humidity indicator.
1. The display is now showing minimum humidity and
temperature reading in memory.
B. Press and hold the MN/MX button again until MAX appears
on the display next to the relative humidity indicator.
1. The display is now showing maximum humidity and
temperature reading in memory.
C. To return to current temperature and humidity readings
press and hold MN/MX button until MIN or MAX disappears
from the display.
D. To clear current MIN and MAX reading from memory, press
and hold the reset (RST) button until the entire display
flashes.

PHT-770 Hygro-Thermometer
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III. Data Hold Function
A. Press and hold the HOLD button until HLD appears on the display next to the
relative humidity indicator.
1. The current reading is now being held and will not change until hold function
is canceled.
B. Press the Reset (RST) button to cancel the Hold function.
C. Hold function can be used for Temperature and Humidity.
IV. Auto Power Off Feature
A. Unit will turn off after 20 minutes. (Sleep Mode)
1. To override the Auto Power Off function (Non-Sleep Mode) press the
ON/OFF button and the MN/MX button simultaneously.
2. After the full display appears, release the ON/OFF button, the display will
show “n” in the center of the display. When “n” appears, release the MN/MX
button.
3. Unit will now be in the Non-Sleep Model
V. Lo Battery Indicator
A. Lo-Battery indication is signaled by the entire display flashing.
1. This is the signal to replace batteries at once.
2. Failure to replace batteries will have an effect on the accuracy of the readings
received from the Hygro-thermometer.
NOTE: Remember Low Batteries will tend to give inaccurate
readings. Make sure you have good batteries at all times.
CAUTION!
DO NOT IMMERSE PROBE INTO LIQUIDS. IMMERSING IN
LIQUIDS WILL CAUSE PERMANENT DAMAGE TO THE
SENSOR!

PHT-770 Hygro-Thermometer
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PHT-770 Hygro-Thermometer Specifications
Input Power: 2 each AAA Alkaline Batteries. Battery provide up to 500 hours of
operation.
Relative Humidity Range: 5 to 95% at operation temperatures from -10 to +50oC
Temperature Range: -10 to +50OC (+14 to +122oF)
Memory: Minimum and Maximum measurement recall
Controls: DATA HOLD button, Recall MIN/MAX button, oC/oF button
Resolution: Temperature resolution in 10th's of a degree
Relative Humidity in 1% increments
Response Time: Approximately 80 Seconds
Auto OFF: Automatic power off after 20 minutes to prevent battery drains when
not in use
Size: 1.9 inches wide x 6.7 inches long x 0.5 inch deep
Accuracy: Temperature - 1oC (1.8ºF)
Humidity-5% all ranges
Rev: PHT-770 – 07-2001
Format modification: 01-20-2005

Copyright 2001-2013, Prostat Corporation
Printed in U.S.A.
1072 Tower Lane, Bensenville, IL 60106 USA
www.prostatcorp.com