Lauda RP 845 Operating Instructions Manual page 90

7.13.2.1 Proven settings for control parameters (External measurement probe):
External vessel
Instru-
Heat Description
ment carrier
Type liquid
double wall glass vessel
RP 845 Water
double wall glass vessel
RP 855 Water
double wall stainless
RP 855 Water
steel vessel with water
double wall glass vessel
RP 855 Ethanol
double wall glass vessel
RP 855 Ethanol
double wall glass vessel
RP 855 Ethanol
Technical alterations reserved!
7.13.2.2 Steps for setting the control parameters for external control
1. Activate external control
2. Setting the slave controller:
2.1. Set parameters to
− Check for thermostat type and change when necessary (RP....)
− Choose heat carrier liquid with low viscosity and high thermal capacity.
Ranking: water, ethanol, water-glycol, oil, Fluorinert®.
− Set pump level as high as possible,
− make bath circulation strong and fast,
− choose hose length as short as possible, i.e. 2 x 1m,
− choose hose cross section as large as possible, i.e. ½ inch,
− throughput through the external load as large as possible.
2.2. Xpf setting:
− when oscillating with short period occur (i.e. 30 seconds)
− in case of bad thermal coupling and large thermal mass
− in case of good thermal coupling and small thermal mass
− when rapid temperature response is required simple internal control should be preferred.
Otherwise select small Xpf (0.05 ... 0.1).
90
Volu- Hose-
me lenght
[L] [m]
2,5 2x1
2x1
2,5
2x1
0,7
2x1
2,5
2x1
2,5
2x1
2,5
7.7.4.
auto ; Xpf see table
Starting up
Proline Low-temperature Thermostats
Master controller
(External controller)
Tne Tve
Kpe
DO Dl Ds
2.0 80 60
2.0 150 130
0.5 70 50
2.0 150 122
2.0 150 120
2.0 125 107
7.13.2.1 (experienced data) depending on:
Xpf lower, otherwise higher,
high (i.e. 2...5, or even higher),
low (i.e. 0.2 ... 0.7),
Slave
controller
(Internal
controller)
Tde Prop_E Xpf
Dc Da hO
5.0 30 4.0
5.0 30 3.0
5.0 30 3.0
15.0 30 3.0
15.0 30 3.0
15.0 30 3.0
9.2.1,
YACE0072 / 21.08.07
Pump
Level
5
5
5
5
5
5