OAKTON 35700-00, 35700-10, 35700-20, 03313-70 Instruction Manual
OPERATING INSTRUCTIONS
OAKTON 35700-00, -10, -20 and 03313-70
Wall-Mount
Thermohygrometers
Printed in the U.S.A. 01/02
Installation
1
/
4"
3
/
8"
1
/
4"
5
/
16"
15
/
32"
7
/
8"
5
/
16"
15
/
32"
1
3
/
16"
Large dial thermohygrometer
(model 35700-20)
Low cost thermohygrometer
(model 35700-10)
Basic thermohygrometer
(model 03313-70)
Operation
These thermohygrometers are maintenance free and do not require any
special adjustments.
Models 35700-10, 35700-20, 03313-70
These models require no batteries or external power to operate.
Model 35700-00
Although the relative humidity scale requires no
batteries or external power to operate, this model
requires one 1.5 V AAbattery to operate the digital
thermometer.
To change the battery, open the lid on the back of the thermohygrometer
and insert the AA battery (see diagram below). The positive (+) and
negative (–) poles are shown at the bottom of the battery compartment.
Temperature selection (Model 35700-00 only)
This instrument is factory set to
read temperature in °C. To
change to °F, locate the switch
under the vents on the back
panel (fourth opening from the
left). Move the switch to the left
with a screwdriver. To return to
°C, set the screwdriver into the
third opening from the left and
move the switch to the right.
See diagram.
C/ F
slide switch
PULL OPEN
battery compartment
Hook for
installing instrument
Bracket
Hole for wall
mounting or
mounting bracket
Hole for wall
mounting or
mounting bracket
Hook for
installing instrument
Model 35700-00
includes a wall
mounting bracket
for permanent
mounting.
Mounting with
the bracket:
1. Mount the bracket
on a wall with
the screws.
See diagram.
2. Slide the holes on
the back of the
instrument over
the bracket hooks.
See diagram.
Thermohygrometer with digital thermometer (model 35700-00)
Humidity adjustment (Model 03313-70 only)
To adjust or reset the RH, remove sticker to reveal opening with an inset
screw. Use a screwdriver to adjust the RH. For increased accuracy, use a
Hygrometer know to be accurate and adjust RH to match. See diagram.
Back
Front
Back
Front
Introduction
Thank you for purchasing an OAKTON Thermohygrometer. You have
one of four models. All models are ideal for monitoring relative humidity
and temperature in laboratories, offices, greenhouses, food storage
rooms, animal rooms, or computer rooms.
35700-20
35700-00
35700-10
03313-70
Precautions
1. Handle with care. Your instrument uses precise mechanisms to
transmit the movement of the sensors. Rough treatment can damage
the mechanisms.
2. Avoid direct contact with water and high levels of condensation.
This instrument is not waterproof, and its vents are intended only
for air circulation.
3. Because the thermometers are also made with precision parts, the
instrument must not be stored in extreme temperatures. Avoid rapid
temperature changes and strong physical shocks. The instrument
must not be placed near heating units or in direct sunlight.
4. For accurate humidity readings, keep the instrument in a vertical
position.
5. Dismantling the instrument can affect its accuracy.
6. Remove stains with a soft cloth and mild detergent.
7. Never use in environments that contain solvents like acetone,
benzene, alcohol, or acids and bases.
03313-70
Basic Thermohygrometer
35700-10
Low-cost Thermohygrometer
35700-00
Wall mount Thermohygrometer
with digital thermometer
35700-20
Large Dial Thermohygrometer
Relative Humidity
Range 25 to 80% RH 25 to 80% RH 20 to 99% RH 20 to 100% RH
Resolution 2.5% RH 5% RH 1% RH 2% RH
Accuracy ±5% RH from 25 to 70% ±5% RH from 25 to 70% ±3% from 20 to 50°C; ±4% from 20 to 90% RH;
±8% RH from 70 to 80%
(at 15 to 25°C)
±8% RH from 70 to 80%
(at 15 to 25°C)
±8% from 90 to 100% RH
Sensor paper-coated metal coil paper-coated metal coil synthetic hair human hair bundle
Temperature
Range –4 to 104°F / –20 to 40°C –22 to 122°F / –30 to 50°C –4 to 120°F / –20 to 50°C 0 to 160°F / –18 to 72°C
Resolution 2°F / 1°C 2°F / 1°C 2°F / 1°C 0.1°F or °C
Accuracy ±3.6°F / ±2°C ±3.6°F / ±2°C ±3.6°F / ±2°C ±1.8°F / ±1°C
Sensor metal coil metal coil alcohol-filled glass thermometer solid state (digital) 3-digit LED
Power none required none required none required one AA battery
Dimensions 5" dia x 1"D 10.75" dia x 0.7"D 4.1" dia x 0.7"D 5" dia x 1.1"D
Shpg wt 0.3 lb 0.5 lb 0.3 lb 2 lbs
Model no.
Warranty
Oakton Instruments warrants this product to be free from significant
deviations in material and workmanship for a period of 1 year from the
date of purchase. If repair is necessary and has not been the result
of abuse or misuse within the warranty period, please return by freight
pre-paid and amendment will be made without charge. The Customer
Service Department will determine if the product problem is due to
deviations or customer abuse. Out of warranty products will be repaired
on a charge basis.
Return of Goods
Authorization must be obtained from our Customer Service Department
before returning items for any reason. When applying for authorization,
please include data regarding the reason the items are to be returned.
For your protection, items must be carefully packed to prevent damage
in shipment and insured against possible damage or loss. We will not be
responsible for damage resulting from careless or insufficient packing.
A restocking charge will be made on all unauthorized returns.
NOTE: We reserve the right to make improvements in design,
construction, and appearance of products without notice.
00703-05
Specifications
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