Product Features

• Displays % RH, dew point, absolute humidity, or temperature
• Available in different configurations
• Ambient unit, reference probe
• High temperature probe
• Sword probe
• Lightweight and portable
• Simple to operate
• Long term stability: ±1% RH over 12 months

  Technical Specification

  PERFORMANCE Measurement Range (RH) 0-100% RH Measurement and Operating Range (T) Fixed and standard probe: -20 to +60°C Sword probe: -20 to +100°C Remote probe: -20 to + 150°C Accuracy RH @ 25°C Fixed probe: ±2% RH (10–90% RH) Remote probe: ±2 % RH (5–95% RH) Accuracy T @ 25°C ±0.2°C (Pt100 Ω 1/3 DIN direct) Temperature Influence ±0.05% RH/°C Stability - RH Sensor <±1% RH/year Response Time <10 sec typical (for 90% of the step change) ELECTRICAL INPUT/OUTPUT Supply Voltage 9 VDC alkaline batteries (200 hours battery life approx) OPERATING CONDITIONS Operating Temperature Hand meter 0 to +60°C Operating Humidity Probe: 5–95% RH (non-condensing) Housing: 5–95% RH (non-condensing) Storage: 5–95% RH (non-condensing) MECHANICAL SPECIFICATIONS Housing Material - Meter Plastic Electrical Connections RH: 3 wires T: 3 wires Ingress Protection IP32 Weight DM509 + probe: 260g DM509 + fixed measurement head: 140g DM + sword: 700g DM509 + tube 500mm: 800g