Protimeter MMS Plus User Manual

APPENDIX 2
BLD5800LH MMS ‘Plus’ - Additional Functions
The Protimeter MMS ‘Plus’ is a derivative of the standard Protimeter MMS that has
additional functionality as follows:
• In Hygrometer mode, it can display the Mixing Ratio (Specific Humidity) of
moisture vapour in either grains/lb or g/kg of dry air
• It can be used with an optional low humidity range sensor, Protimeter Part
No. BLD5812
Instructions to Display Mixing Ratio or Specific Humidity
The Mixing Ratio, or Specific Humidity as it is also known, is the mass of water vapour
per unit mass of dry air. This figure can be displayed in the Hygrometer mode of
operation, as detailed in section 3.
By Pressing repeatedly in Hygrometer mode, the following measurements are
displayed in succession:
%rh relative humidity
T
AIR
air temperature in either
O
C or
O
F
T
DEW
dewpoint in either
O
C or
O
F
g.Lb Specific Humidity expressed as grains/lb (when the MMS is set up to measure
temperature in
O
F)
– or –
AbS Mixing ratio expressed as g.kg (when the MMS is set up to measure temperature in
O
C)
The Mixing Ratio (AbS) or Specific Humidity (g.Lb) displays are accompanied by a momentary
beep to draw attention to the unit of measurement before displaying the value itself.
To change from
O
C to
O
F temperature measurement and vice versa, please refer to section 5.
BLD5800LH Logging Software
If required, measured values can be stored in the MMS ‘Plus’ memory for downloading to a PC.
Please refer to
Section 6 for details. Only software version 2.04 and above, should be used
with the MMS ‘Plus’.
16

Protimeter MMS Plus Specifications

General

Brand	Protimeter
Model	MMS Plus
Category	Measuring Instruments
Language	English