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SEKONIC ST-50 Series Electronic Thermo-hygrograph

Made in Japan

Models / Description
ST-50M /BASIC Electronic Thermo-hygrograph
ST-50A / Electronic Thermo-hygrograph, with SD card recorder function,

HE0140010 / chart paper for ST-50 , 12m length per one Z-fold (5 sheet Z-fold chart per box)
HEFC / fiber tip 4/pk

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Description

ST-50A

ST-50M

Electronic Thermo-Hygrograph ST-50 Series

Name: SEKONIC ST-50 Series Electronic Thermo-hygrograph
SKU: 68ba5e12236b89000ec5d6f6
Availability: InStock

Product Introduction

The ST-50 Series electronic thermo-hygrograph provides continuous temperature and humidity recording for up to six months without chart changes. Its compact design and battery or AC-adapter power make it ideal for controlled environments—clean rooms, animal housing, warehouses, museums, and production facilities in pharmaceuticals, semiconductors, and electronics.

The ST-50A is an enhanced variant of the ST-50 Series thermo-hygrograph that combines the familiar six-month chart recording with digital data logging to an SD card. It records temperature and humidity simultaneously on the Z-fold chart and in digital form for easy archiving and analysis.

Key Features

Long-term continuous recording up to 6 months on a single Z-fold chart
Digital LCD displays temperature, humidity, dew point, and absolute humidity
High-stability electronic sensors with one-point or two-point user calibration
Sensor cable extendable to 50 m for remote monitoring
Desktop or wall-mount installation; battery or 9 V DC 500 mA adapter power
Automatic or switch-controlled pen position adjustment

Measurement Methods

Temperature: Semiconductor sensor, range selectable (–20 to 80 °C/–4 to 176 °F)
Humidity: High-molecular capacitive sensor, range 0 to 100 % RH (non-condensing)
Displayed values: Temperature, % RH, dew point, absolute humidity

Specifications

Parameter	Detail
Chart Paper	Z-fold, 12 m × 113 mm; records both T and RH on 100 mm width
Chart Speed	User-selectable range (1, 2, 3); up to 6 months at slowest speed
Feeding Accuracy	± 3 mm over 12 m
Temperature Accuracy	± 1.0 °C (32 to 122 °F)
Humidity Accuracy	± 3 % RH (10 to 90 % RH @ 25 °C)
Temperature Resolution	0.1 °C / 0.1 °F
Humidity Resolution	0.1 % RH
Recording Ranges (switchable)	T: –20 to 80 °C / 0–50 °C / ±10 °C/±25 °C/±25 °F/50 °F<br>RH: 0–100 % RH / ±10 % / ±25 % RH
Ambient Conditions	–20 to 50 °C; 20–90 % RH (no condensation)
Power	4× LR20 (1.5 V) or external 9 V DC, 500 mA adapter
Dimensions (W×H×D)	300 × 245 × 105 mm (11.8 × 9.6 × 4.1 inches)
Weight	2.1 kg (4.6 lbs) (without batteries)

Standard Accessories

4× LR20 batteries
1 chart paper (12 m)
1 red/blue fiber-tip pen

Optional Accessories

Sensor extension cables (5 m, 20 m, 50 m)
Chart paper (5 sheets/box) (HE0140010)
Chart pens (2 blue + 2 red/box) (ST-50A)

Shipping & Payment

Delivery Options

Store Pickup
Local Delivery

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Bank transfer / cheque deposit

SEKONIC ST-50 Series Electronic Thermo-hygrograph

Electronic Thermo-Hygrograph ST-50 Series

Delivery Options

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