Specifications for MINI-PAM-II Accessories Porometer Configuration

All specifications are subject to change without prior notice.


Design: leaf chamber with a circular 1 cm diameter sample area. Ventilated on one side by air with adjustable flow rate. The amount of water vapor released to the air flow is determined with high precision humidity sensors. The leaf temperature is measured by an IR sensor located in the chamber bottom. GPS information is tracked by a built-in GPS receiver. A mini quantum sensor is positioned on the sample plane. Ambient CO2 values are monitored by a CO2 sensor facing the outside, at the lower left side of the porometer. For chlorophyll a fluorescence measurements, a fiberoptics port aligns the MINI-PAM/F Fiberoptics at an angle of 60° relative to the measuring plane. Including tripod-mount.

Power supply: MINI-PAM-II leaf clip socket; The MINI-PAM-II: the 6 AA (Mignon) rechargeable batteries (Eneloop 1.2 V/2 Ah) provide power for more than 6 hours for typical experiments. The porometer alone can be operated for more than 9 hours at maximum flow. Easy battery swap possible.

Sample area: 1 cm diameter

Flow rates: 40; 60; 80; 100; 120; 140; 160; 180 or 200 µmol s-1

RH sensor accuracy: typ. 20-70 %RH ±1.0 %RH; <20 %RH and >70 %RH ±1.5 %RH; ΔT = ±0.1 °C

Pressure sensor accuracy: ± 0.1 kPa, noise 0.2 Pa

Leaf temp. sensor accuracy: ± 0.3 °C, emissivity adjustable 0.1-1.0

Ambient CO2 sensor accuracy: ± (30 ppm, + 3 % of reading)

Flowmeter accuracy: ± (1.5 % RD + 0.15 % FS)

GPS receiver accuracy: 2.0 m CEP (circular error probable)

Micro quantum sensor: Sensor for selective PAR measurement with the spectral properties of the LS-C sensor, range 0 to 7000 µmol m-2 s-1, cosine corrected for light incident at an angle between -30° to +30° from surface normal, internal preamplifier

Parameter: gs mmol m-2 s-1; gt mmol m-2 s-1; gb mmol m-2 s-1; H2Oin mmol mol-1;
dH2O mmol mol-1; H2Oout mmol mol-1; chamber pressure kPa, Temp (leaf) °C; Flow in/out µmol s-1; VPD Pa/kPa; E mmol m-2 s-1; PAR µmol m-2 s-1; GPS-location; GPS-orientation; sun-inclination

Operating conditions: -5 to +45 °C; 0-90 %RH (non-condensing); 30-110 kPa

Cable length: 75 cm

Dimensions: 24 cm x 7.5 cm x 14 cm (max L x W x H)

Weight: 450 g (excluding cable)

Transport Case PORO/T

Design: Black case with custom foam packing

Dimensions: 31 cm x 26.5 cm x 11 cm (L x W x H)

Weight: 1.2 kg