diff --git a/Control/brewpi/mass.py b/Control/brewpi/mass.py
index 7059ce4..71b9569 100644
--- a/Control/brewpi/mass.py
+++ b/Control/brewpi/mass.py
@@ -1,6 +1,7 @@
 import numpy as np
 import json
 from aplant import APlant
+from math import sqrt
 
 class Mass(APlant):
 	def __init__(self, params):
@@ -16,6 +17,7 @@ class Mass(APlant):
 		self.M = params['M']
 		self.L = params['L']
 		self.Td = params['Td']
+		self.kn = params['kn']
 		self.theta_amb = params['theta_amb']
 
 		self.theta = 0
@@ -37,4 +39,4 @@ class Mass(APlant):
 		return self.P
 	
 	def getTemperature(self):
-		return self.theta + self.theta_amb
+		return self.theta + self.theta_amb + self.kn*np.random.normal(0,1)/sqrt(12.0)