Toho Electronics TSM-H2 User manual

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Humidity Converter TSM-H2/H3
Operation Manual
Description
1. Introduction ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 2
2. Structure and Method of Connection ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 2
3. Specifications ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 2
4. Chemical Resistance ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3
5. Things to Be Noted in Handling the Product ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3
6. Replacement of Sensor ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 3
7. Warranty Period ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 4
8. Disclaimer ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 4
9. D i m e n s i o n a l O u t l i n e D r a w i n g ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 5–6
1 0 . Connection Diagram ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 7

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1. Introduction
Thank you for purchasing Humidity Converter < TSM-H2/H3 >.
This product uses < TI-A > for its humidity sensor. <TI-A> is durable and highly responsive, with low
hysteresis and less temperature dependency, and can maintain a reliable humidity measurement for a
long time.
2. Structure and Method of Connection
The wiring diagram of the product is shown in Figures 1 to 3 while the wiring diagram is shown in
Figure 4. Please use the product by connecting it to devices, such as data logger, in accordance with
Figure 4.
3. Specifications
The specifications of the product are the following:
Usable Temperature Range (Main Unit) -5 to +55℃
(Sensor Section) -25 to +100℃
Measuring Humidity Range 0 to 100%RH
Measuring Accuracy (at 25℃)
For TSM-H2
±2%RH (10 to 90%RH)
±3%RH (2 to 10%RH, 90 to 100%RH)
For TSM-H3
±3%RH (10 to 90%RH)
±4%RH (2 to 10%RH, 90 to 100%RH)
Responsiveness 15 seconds (90% response if membrane filter is used)
Drive Voltage 9 to 30V DC (4 to 20mA DC, 0 to 1V DC)
9 to 25V DC (1 to 5V DC, 0 to 5V DC)
Output (Humidity Controller Side)
・For Current Output 4 to 20mA DC: 0 to 100%RH
・For Voltage Output 0 to 5V DC: 〃
0 to 1V DC: 〃
1 to 5V DC: 〃
＊Consumption Current 4mA or lower
＊Output Impedance 1kΩ
＊Only “0 to 1V DC”has a display device
・Temperature Resistance Value (Pt100Ω three-wire type)
Insulation Resistance 500MΩ or higher (250V DC 2 minutes)
Output Cable Length 0.5m (standard)

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The characteristics of each element are the following:
E l e m e n t
T e m p e r a t u r e S e n s o r E l e m e n t
H u m i d i t y S e n s o r E l e m e n t
S p e c i f i c a t i o n s
R e s i s t a n c e T e m p e r at u r e D e t e c t o r
P t 1 0 0
H i g h P o l y m e r E l e c t r i c C a p a c i t y
T y p e
Measuring
Range
-40 to +100℃
0-100%RH
-25 to 100℃
Measuring
Accuracy
±［0.15＋0.002ｔ］℃
Sensor
JIS-C1604-1997 Class A equivalent
Temperature
Coefficient
±0.03%RH/℃
(15 to 55℃200kHz)
Response Speed
(90% response)
16 sec.: At the wind speed of 1m/sec.
15 sec.: If membrane filter is used
60 sec.: If BH
Output Signal
Pt100Ω Resistance Value
Electric Capacity
Consumption
Current
1mA or lower
4. Chemical Resistance
If the product is used in an atmosphere with an organic solvent and other active gases, such as ozone,
ethylene oxide, acid, and alkaline, accurate relative humidity may not be achieved depending on the
level of concentration of the said chemical substances.
Please consult with us if the product is to be used in such an environment.
5. Things to Be Noted in Handling the Product
Upon using this product, please take note of the following:
(1) Do not apply a strong force on the product.
(2) Do not leave the product under condition s that cause high heat, such as direct sunlight,
for a long time.
(3) Do not soak the product in water.
(4) Do not touch the sensor element directly with your hand. Use tweezers to attach/remove the
sensor element. Be careful not to damage the sensor element.
(5) Supplying voltage with a value beyond the permissible range may cause the product to generate
an erroneous output.
Make sure to keep the supply voltage within the specified range. Excessive supply voltage may
cause damage to the electric circuit.
(6) Do not bend the cable between the sensor and casing and the output cable to a sharp angle.
(7) Do not wipe the product with benzene and thinner.
(8) Do not adjust or improvise the internal circuit. Doing so may lower the output accuracy.
(9) Prevent the protective cap from contact with other metal parts.
(10) It is recommended to calibrate the output once every few months using an accurate hygrometer.
(11) Install the product in a direction where TSM-H2/H3 with the current output specification will
not be affected by the heat generated by the electric circuit of the main unit.
(12) Use only the designated AC-DC adapter.
(If option is selected)
6. Sensor Replacement
In case measurement accuracy is out of the specified range at Item 5 -(10), replace the humidity
sensor element “TI-A”in accordance with the following procedures:
(1) Remove the protective cap and pull out the humidity sensor module.
(2) Insert the new module into the socket section and attach the protective cap.
(3) Calibrate the unit using an accurate hygrometer before using it.

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Please inquire if the measurement value is still out of the measuring range after the replacement of the
sensor module.
[Caution]
Measuring the accuracy of the humidity converter after the replacement of the humidity sensor is
shown below.
(For TSM-H2 only)
Measuring Accuracy After the Replacement of Humidity Sensor Element
±3%RH: 10 to 90%RH at 25℃
±4%RH: 2 to 10%RH at 25℃
: 90 to 100%RH at 25℃
7. Warranty Period
This product has a warranty of up to one year from shipment. See the “Warranty Period of Humidity
Sensor Element TI-A”for the sensor section. We will repair the product free of charge for any trouble
due to our fault within this period.
However, please be noted that the warranty does not cover the damages due to natural disasters and
customer carelessness, fluctuations in output value due to the use of the product in an ambiance of
organic solvent gas, and degradation of the sensor due to condensation.
8. Disclaimer
Please be noted that we shall not be held liable for any damage that may be caused by output error s
and malfunction of this product, whether directly or indirectly, to the facility and product of the user.

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9 . D i m e n s io n a l O u t l i n e D r a w i n g
Fig. 1 Dimensional Outline Drawing (Cable Type; Figure Shown Is the S type)
Fig. 2 Dimensional Outline Drawing (Probe Type; Figure Shown Is the L type)
50 m m
35mm
50 m m 46 0mm 4 0mm
38 m m
Ｍ４
×
７
Ｍ４
×
７
黒
緑
黄
紫
茶
青
（白 ）
55
25
φ14
～20 0 0m m
38mm
セン サ保 護 キャ ップ
湿度 セン サ 素子 Ｔ Ｉ－ Ａ
温度 セン サ 素子 Ｐ ｔ１ ０ ０
H um i d i ty S en so r E l em en t T I - A
T e m pe r a t u r e S e n s o r E l e m e n t P t 1 0 0
S e n s o r P r o t e c ti v e C a p
S e n s o r P r o t e c ti v e C a p
( F o r v o l t a g e
o u t p u t o n l y)
B l a c k
G r e e n
P u r p l e
Blue
Y e l l o w
B r o w n
B l a c k
G r e e n
P u r p l e
Blue
Y e l l o w
B r o w n
( W h i t e )
38mm
38mm

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Fig. 3 Dimensional Outline Drawing (Duct Type)
Rubber Packing
(Main Unit)
M4 Countersunk Screw-40mm
(or pan-head tapping screw)
Drilling location (fo r duct, etc.)
(Two position s)
If th e tapping screw is used, t he h ole dia me ter
dep ends on th e pl ate th ickness.

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10. Connection Diagram
Fig. 4 Connection Diagram (Check the output type and make sure that the wiring is correct)
TSM-H2/H3-20120301-1
黒： Ｂ
緑： ｂ 温 度セン サ素子 用
黄： Ａ
紫：
青：
DC ＋9～2 5 V ＋
－
I＝４ ～２ ０mA
電流 出力 の場 合
黒： Ｂ
緑： ｂ 温 度セン サ素子 用
黄： Ａ
紫： 電 源 ＤＣ＋ ９～２ ５V
茶:出力
青:ＧＮ Ｄ
白:ＧＮ Ｄ
電圧 出力 の場 合
直流 電 源
＋ －
制御 機 器等
For Voltage Output
For Current Output
B l a c k : B
G r e e n : b
F o r t e m p e r a t u r e s e n s o r e l e m e n t
Y e l l o w : A
P u r p l e :
Blue:
D C P o w e r
C o n t r o l l e r , e t c .
B l a c k : B
G r e e n : b
F o r t e m p e r a t u r e s e n s o r e l e m e n t
Y e l l o w : A
P u r p l e : P o w e r
Blue:
B r o wn : O u t p u t
W h i t e: