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Humidity Meter - R220 Series

Humidity Meter - R220 Series

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Temperature/Humidity Transducers R220 Series

The R220 series is a temperature/humidity-bulb temperature and humidity sensor. The two temperature detecting element for the dry bulb and wet bulb use platinum resistance thermometer. It is small and light-weight, equipped with a ventilation system and a wet-bulb water tank.

Model List

Model

Number of elements

Models

General form

1 pair

R220-30

2 pairs

R220-30W

Automatic water supply type
(Solenoid valve type)

1 pair

R221-30

2 pairs

R221-30W

*The above is for a 5m lead wire, but 10m is also available.

คุณสมบัติ

Equipped with a ventilation device, it is possible to measure even when there is no wind.

The following four types are available, taking into consideration the usage environment and conditions.

  • R220-□0 (standard type)
    This is the basic type of the R220 series and is the most widely used models.
    The tank capacity is approximately 300ml, but please refill the tank water approximately every 5 days.
  • R220-□0W (2-pair element type)
    In order to regulate the temperature and humidity in a temperature and humidity chamber, etc., two pairs resistance thermometer are provided for both the dry bulb and the wet bulb, and to record the data at the same time.
    structure consists of two pairs of temperature resistance elements inside the dry-bulb and wet-bulb protective tubes.
  • R221-□0 (automatic water supply type)
    It is suitable for use in places where water consumption is rapid, such as high temperature and low humidity.
    A continuous supply of water can be provided by connecting the pipes to a water supply or tank.
    The water level detection float switch opens and closes the solenoid valve to keep the water level at the proper level at all times.
  • R221-□0W (automatic water supply, 2-pair element type)
    This automatic water supply type has two pairs of dry-bulb and wet-bulb resistance thermometer to allow for adjustment and recording.

ข้อมูลเฉพาะ

Measurement Range:

Relative humidity: 20 to 80%rh

Temperature: 0 to 60°C

Accuracy ratings:

Relative Humidity: ±2%rh

Temperature: ±0.3℃ (at 0℃)

(Ventilation speed 3m/s or less)

Resistance thermometer: Pt100 (JPt100) 3-wire

Water tank capacity: Approximately 300ml

Measurement conditions: Ambient temperature: 0 to 60°C

Power supply: designate either 100V AC or 200V AC, 50/60Hz

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